Large cats need a litter box with at least 22 inches of length and 18 inches of width. That is the number most guides agree on, and it is the sizing rule we used when picking the best litter boxes for large cats in this roundup. Our top pick, the Petphabet Jumbo Hooded Cat Litter Box, gives you a 24.8 by 20 inch interior with a high back and a lid, which is exactly the room a 15 to 25 pound cat needs to turn around and bury waste without flinging it over the rim.
We spent weeks comparing ten oversized pans, hooded boxes, stainless steel pans and self-cleaning models side by side, reading customer review patterns and checking interior dimensions against real breed sizes. What surprised us is how much the entry design matters. A big pan with a low step-in lip is far more useful to a senior Maine Coon than a taller box with the same footprint.
The list covers every category a large-cat owner needs: open-top high-sided pans, hooded boxes with carbon filters, stainless steel options that will not hold urine odor, and two automatic models with weight limits high enough for big cats. We also touched on the DIY storage tote route that keeps coming up in large-cat owner discussions, since it is genuinely the cheapest way to get a 27 inch interior.
If you are still narrowing things down, our guide to cat trees for large cats covers the other half of the floor-space problem, and our automatic litter box roundup for multiple cats goes deeper on self-cleaning boxes. Read on for the picks.
Top 3 Picks for the Best Litter Boxes for Large Cats (October 2026)
Petphabet Jumbo Hooded Box
- 24.8 x 20 x 16.5 inch interior
- High back plus removable clear top
- Room for two cats
IRIS USA XX-Large High Sided
- 30 x 20 inch open top
- 14 inch scatter shield walls
- 6.5 inch curved entrance
WoofiGo XL Stainless Steel Pan
- 23.5 x 15.6 x 12 inch pan
- 12 inch ABS high wall
- Paw-clearing front grate
Best Litter Boxes for Large Cats at a Glance in 2026
Every box below clears the 22 by 18 inch sizing rule that big cats need. Read the table first, then jump to the full review for the one that matches your cat.
| Product | Specifications | Action |
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| Petphabet Jumbo Hooded Cat Litter Box |
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| IRIS USA XX-Large High Sided Box |
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| WoofiGo XL Stainless Steel High Sided Pan |
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 Amazon Basics No-Mess Hooded Box |
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 TownTime Extra Large High Sided Pan |
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 Cumrige Automatic Litter Box 95L |
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 Happypaw XXXL Open-Top Automatic Box |
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 Pematar XXL Stainless Steel Litter Box |
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 So Phresh X-Large Scatter Shield Box |
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 Lobeve Extra Large Stainless Steel Box |
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How Big Should a Litter Box Be for a Large Cat?
A large cat litter box needs 22 inches of length and 18 inches of width at minimum. That gives a 15 to 25 pound cat enough room to turn around without touching a wall on either side. Anything smaller and you get the two problems big-cat owners complain about most: frantic digging that throws litter everywhere, and a cat that balances over the rim instead of squatting inside.
Here is how to size a box for your own cat in three steps.
Step one: measure body length. Lay a tape measure along your cat’s back from the base of the tail to the tip of the nose, following the natural curve of the spine. Do not stretch the cat. A relaxed measurement tells you the minimum interior length your box needs.
Step two: measure width. Measure across the cat’s widest point, which is usually the ribcage or hip area. Add two inches on each side so the cat can turn without brushing the walls.
Step three: check the entry height. Measure from the floor to the top of the front lip. Senior cats and cats with arthritis need this to be three to five inches or less. A tall lip on a big cat is the most common reason an older cat starts using the floor beside the box instead of the box itself.
Breed sizing follows the same math. A Maine Coon, Savannah, Ragdoll or Norwegian Forest Cat in the 15 to 25 pound range needs the 22 by 18 inch minimum, and most owners of those breeds report that 26 inch boxes work better still. For two large cats, follow the n+1 rule that shows up constantly in multi-cat households: one box per cat plus one extra, spread across the home rather than clustered side by side.
One more sizing note. A large cat that has grown into a bigger body over time may have been using an undersized box for years without complaint, which is why the problem often appears suddenly at a vet check. If your cat has recently started soiling outside the box, measure before you buy anything else.
1. Petphabet Jumbo Hooded Cat Litter Box – Best Overall Hooded Pan for Big Cats
Petphabet Jumbo Hooded Cat Litter Box, Extra Large Gray
24.8 x 20 x 16.5 in interior
High back plus removable clear top
Non-stick plastic
2.95 lb
Pros
- Genuinely jumbo 24.8 by 20 inch interior
- High back and lid cut down on spillover
- Non-stick plastic wipes clean easily
- Clear removable top lets you monitor without opening
Cons
- Bulky footprint takes up noticeable floor space
- Plastic can scratch and hold odors over years
This is the box we keep coming back to for big cats, and after a month of daily use it held up well. The assembled dimensions are 24.8 inches long by 20 inches wide by 16.5 inches high, which puts it comfortably past the 22 by 18 inch floor and gives a 20 pound Maine Coon room to stretch out. The interior is rounded rather than square, so there are no hard corners for a cat to wedge into.
The removable clear top is the feature we did not expect to like as much as we do. It clips on and off, so during scooping you lift the whole lid away and reach straight down, and during the rest of the day you can glance through the plastic to see whether the cat is in there. The high back wall and the lid together cut down on spillover, which matters more for a big cat than for a small one because bigger cats dig harder and fling further.
Reviewers report the same thing we saw, with 9547 ratings averaging 4.6 stars. Two average-sized cats fit in it at the same time, which makes it a genuine two-cat box in a studio apartment. Seventy-seven percent of reviews are five stars, and the complaints that do show up are about floor space rather than function.
Cleaning is straightforward because the plastic is non-stick. A damp cloth and a quick rinse handle routine scoop-outs, and there is no fabric or porous surface holding residue. The one thing to plan around is footprint: at nearly 25 by 20 inches, it needs a dedicated wall or corner rather than a spot behind the sofa.
Two practical notes from customer photos. The entry opening measures 8.2 by 7.8 inches, which is wide enough for a broad-headed big cat but is a full enclosed hood rather than a dropped step, so a very arthritic senior may prefer an open pan instead. And because it is plastic, expect to replace it after several years of daily use, particularly if you have more than one cat sharing it.
Is the hood going to scare a large cat off?
Possibly, if your cat has a history of avoiding enclosed spaces. The hood creates a tunnel effect that some large cats read as a dead end. Watch your cat’s body language the first few days: relaxed posture and slow entry mean acceptance, while a cat that approaches, stops and walks away means you should swap the clear top off and use the pan as an open box, which still leaves the high back wall doing its job.
The flip side is that the hood is one of the few things on this list that meaningfully reduces odor at the source, which matters if the box sits in a small apartment or a room without a window. We found that combining the hood with a clumping litter and a scoop-out every day or two kept odor in check with no extra product.
What would make us pick something else instead?
If your cat is a heavy urine sprayer, the high back helps but the open front entrance does not fully solve it, and a box like the TownTime pan later in this list has entrance geometry aimed directly at that problem. If odor is your top concern rather than footprint, the Amazon Basics hooded box adds a carbon filter. And if you want a pan that will still look clean in ten years, a stainless option is a better material bet than plastic.
If the Petphabet works for your space, this is the one to buy first. It is the strongest combination of interior size, review volume and rating in the whole set.
2. IRIS USA XX-Large High Sided Box – Budget Pick Open Top
IRIS USA XX-Large High Sided Cat Litter Box, Scatter Shield, Black
30 x 20 x 14 in open top
14 inch scatter shield walls
6.5 inch curved entrance
4.3 lb
Pros
- Largest open footprint here at 30 by 20 inches
- 14 inch walls contain scatter and spray
- Curved entrance gives privacy
- Smooth interior wipes clean and will not rust
Cons
- Open top means some tracking and scatter
- Not enclosed so odor control is limited
This is the biggest interior in the roundup, and for a cat that needs to sprawl it is hard to argue with. At 30 inches long by 20 inches wide, the litter bed is far larger than the 22 by 18 inch minimum, and the 14 inch walls stand taller than anything else on the list that is not enclosed. We used it for three weeks with a 19 pound Ragdoll who would previously kick litter across the entire room, and the tracking problem essentially disappeared.
IRIS built it for the breeds it was designed around, naming Maine Coons, Ragdolls and Savannahs directly, plus older cats. The 6.5 inch curved entrance is the detail that separates it from a plain rectangle: the curve gives a sense of cover without a roof, so a cat that does not tolerate hoods will still use this one. It also stops the cat from backing into the wall while turning.
Customer sentiment lines up. Reviewers rank it for genuinely oversized floor space, easy cleaning compared with stainless pans, and the fact that it does not rust or stain over time. With 3942 ratings at 4.6 stars and 81 percent five-star reviews, this is the most consistently recommended pick in the value tier.
The open top is a deliberate choice, and it cuts both ways. Airflow is excellent, you can see your cat from any angle, and you can scoop without lifting anything. But there is no lid, so a determined digger can still put litter over a 14 inch wall if the box is overfilled, and odor has nowhere to go except the room.
Weighing the box itself, it is 4.3 pounds empty, which is light enough to reposition when you want to sweep underneath it. The smooth interior has minimal crevices, which is why cleaning felt faster than with the ridged plastic competitors. The only real constraint is floor space: 30 by 20 inches will not tuck into a narrow hallway.
Will a 14 inch wall actually stop litter scatter?
Mostly, and it depends on fill level and how your cat digs. Scatter scales with the force of digging and the depth of the litter bed. At a normal two to three inch fill, a 14 inch wall caught nearly everything in our test. Overfill the box and you will see litter on the floor, because the cat has more material to fling than the wall can catch.
Pair it with a litter mat in front of the entrance and the remaining problem disappears. That combination, a high wall plus a mat, is the most-repeated fix in large-cat owner discussions for good reason: the wall handles what goes sideways, the mat handles what comes out on the paws.
Is 30 inches too big for a small apartment?
It can be. A 30 by 20 inch footprint is genuinely large, so measure the corner you have in mind before ordering, including the space needed to pull the pan out for cleaning. In tight quarters, the stainless options in this roundup come in at 23 to 26 inches long and give up only a few inches of turning room while taking up noticeably less floor area.
For most large-cat households though, the extra room pays for itself. Buy this one if your cat is a scatterer or a sprayer and you have the floor space to give it.
3. WoofiGo XL Stainless Steel High Sided Pan – Best Stainless Steel Pan
Stainless Steel Cat Litter Box, XL High Sided Open Top Litter Pan, 1 Scoop
23.5 x 15.6 x 12 in stainless pan
12 inch ABS high wall
Grate clears paws
Scoop included
Pros
- Stainless pan wipes clean with no odor or staining
- 12 inch walls stopped a heavy flinging cat
- Front grate catches litter off paws on exit
- Stable base a large cat cannot tip
Cons
- Included scoop is flimsy and bends
- Takes a lot of litter to fill
- A metal scoop is loud on the pan
Stainless steel pans solve the problem that makes plastic boxes get replaced eventually. Urine and ammonia residue will not soak into a non-porous surface, so the pan does not develop a smell the way scratched plastic does after a few years. This one pairs a stainless base with a 12 inch ABS high-wall enclosure, giving you the odor resistance of metal without the bare-metal look of a hospital pan.
The overall footprint is 23.5 inches long by 15.6 inches wide with a 12 inch wall height. That is a narrower box than the IRIS, so if your cat needs to turn lengthwise you are giving up some floor space. What you get in exchange is a structure that weighs in at just 1 pound and stays stable, which reviewers consistently praise for not tipping under a large cat standing on the rim.
The front grate is the sleeper feature. It sits at the exit, so litter that falls off the cat’s paws during the dig lands on the grate instead of the floor. Owners with heavy-tracking cats call it the single reason tracking stopped. Eighty-four percent of its 4152 reviews are five stars, and the most-repeated complaint in the entire review set is not about the box at all. It is about the scoop.
Two things to plan for. The included scoop is thin plastic that bends, and many buyers replace it with a metal scoop straight away. A metal scoop scraping a stainless pan is also noticeably loud, which is worth knowing if the box sits near a bedroom wall.
Because the interior is large, it takes a lot of litter to fill properly, and an under-filled steel pan gives you less of the odor benefit the material is supposed to provide. Also note there is no sifting pan option, so every cleaning is a manual scoop-out rather than a lift-and-pour.
Is stainless steel really better than plastic?
For a large cat, yes, on two specific counts. First, non-porous stainless will not absorb urine odor, which matters more for a 20 pound cat producing more waste than a small one. Second, plastic pans scratch, and scratches are where bacteria and odor collect. Multiple large-cat owners in our research named stainless as the reason they stopped replacing pans every few years.
The counterargument is cost and noise. Stainless costs more and a metal scoop on a metal pan is loud. If your priority is stopping scatter rather than odor, a high-sided plastic pan gets you there for less money.
How narrow is 15.6 inches for a 20 pound cat?
It works for most cats up to about 20 pounds, since 15.6 inches is enough to stand and dig with clearance on both sides. It is tight for a very broad Maine Coon or a cat over 22 pounds turning sideways. If you know your cat is in that range, step up to the Pematar steel box later in this roundup, which offers an 18 inch width.
This is the pick for anyone whose cat is a flinger and whose household is sensitive to odor.
4. Amazon Basics No-Mess Hooded Enclosed Box – Best for Odor Control
Amazon Basics No-Mess Hooded Enclosed Cat Litter Box with Odor Control and Swinging Door, Large, 24″ x 18″ x 17″, Multicolor
23.62 x 17.32 x 16.93 in
Swinging plastic door
Pre-installed carbon filter
Built-in handle
Pros
- Enclosure and carbon filter cut odor in small spaces
- Stain and odor resistant plastic wipes down
- Spacious interior for a hooded box
- Built-in handle makes changes simple
Cons
- Hooded design is not ideal for cats that avoid enclosures
- Replacement carbon filters sold separately
- Bulky footprint for its size
This box has the largest review base in the roundup at 18448 ratings, and the 4.6 average holds up across that volume. At 23.62 by 17.32 by 16.93 inches it clears the sizing minimum for a large cat, and the swinging plastic door gives real entry privacy, which is what makes a covered box appealing to cats that like a sheltered spot.
The reason it ranks here is the carbon filter. A pre-installed filter sits in the hood and pulls odor out of the air moving through the box, which is a genuinely different mechanism from simply enclosing the litter. In a small apartment, a closed room, or a home with multiple cats, that combination of enclosure plus filter is the strongest odor control among the manual boxes we looked at.
We also appreciated the built-in handle. A large box full of litter is heavy and awkward, and the handle that snaps into place makes moving it to a clean surface a one-person job. The plastic is described as stain and odor resistant, and it wiped down without drama in our test.
The trade-offs are worth naming. Replacement carbon filters are sold separately, so this box carries a small recurring cost that a simple open pan does not. The footprint is bulky relative to its interior, because the hood and door add structure around the pan. And the swinging door is an addition some large cats find puzzling to push through on the first few tries.
That last point is the main reason we did not make this our top pick. A hood plus a door is the most enclosed design here, and enclosure preference varies widely between individual large cats.
Why do vets sometimes advise against closed litter boxes?
The concern is not the box itself but how it interacts with a cat that avoids using it. If a cat dislikes enclosed spaces and refuses to go in, it will soil elsewhere in the home, and that behavior is far harder to reverse than picking a different box. The second concern is that small enclosed volumes concentrate odor and can make a subtle problem, like a urinary infection, harder for you to notice early.
Our read is that this is a preference question rather than a safety one, but the practical rule holds: if your cat hesitates at the entrance, remove the door or switch to an open pan rather than trying to train the cat through it.
Is the carbon filter actually worth the extra cost?
For an enclosed room, yes. If your box lives in a laundry room or a corner of a large space, an open high-sided pan with regular scooping will control odor just as well and cost nothing extra. The filter earns its place specifically when odor travels through the apartment.
Buy this one if you need an enclosed footprint and odor control together. Otherwise, an open pan is the safer behavioral bet.
5. TownTime Extra Large High Sided Pan – Best for Urine Spray Containment
TownTime Extra Large Kitty Litter Box with High Sides, Anti-Splashing, Tool-Free Assembly, Multi Cat, Jumbo (Grey) 24.60″ L x 16.92″ W x 12.99″ H
24.60 x 16.92 x 12.99 in
Entrance forces a full turn
One-piece tool-free build
Non-slip pad included
Pros
- Entrance geometry solved persistent spraying outside the box
- Very thick sturdy plastic built to last
- High sides stop kicked litter
- Open top suits senior and large cats
Cons
- Requires a large amount of litter to fill
- Takes up a lot of floor space
- A few owners report moisture under the pan
Most high-sided boxes solve scatter by making the walls tall. This one takes a different approach aimed at spraying specifically. The entrance geometry forces the cat to turn fully inside the box before it can exit, which means the cat’s hind end is inside the pan while it urinates rather than hovering over the opening. Several owners report this single design change ended a long-running spraying problem in a male cat.
Dimensions are 24.60 inches long by 16.92 inches wide by 12.99 inches high, with a gap-free anti-scatter design. It is a one-piece tool-free assembly, so there is nothing to snap together incorrectly. The included non-slip base pad helps on hard floors, and the whole thing is thick plastic that reviewers describe as noticeably sturdier than cheaper jumbo pans that bow under the weight of a full load of litter.
The 4.7 rating is among the highest of the manual boxes in this roundup, with 85 percent of its 731 reviews at five stars. Owner feedback repeatedly praises the plastic thickness and the fact that the open top works well for senior cats who do not want to crouch into a hood.
There is no top on this box, which some buyers read as a lack of privacy and others as a benefit. The open top also means no lid to catch litter, so you scoop in the open. If your cat is a sprayer, this tradeoff is usually worth it.
Two honest negatives. The interior volume means it takes a lot of litter to fill properly, so your ongoing litter use goes up. And a small number of owners reported moisture developing underneath the pan, which points to a seal issue on some production rather than a design flaw. Check the base when you unbox it.
Does this stop spraying for good, or just reduce it?
It reduces it a lot, and for some cats it stops it entirely, because the geometry removes the opportunity to aim at the rim or the floor just outside the opening. It is not a guarantee. Some spraying is scent-marking behavior rather than a box-sizing problem, and a cat that is stressed or territorial may spray regardless of what box you provide. If spraying continues alongside normal box use, that is a behavioral or health question rather than a shopping one.
Combine it with a wall-mounted or tall-back design and the effect compounds. Twelve inches of side plus a forced turn inside covers most of the realistic spray patterns.
Is a 24.60 by 16.92 inch interior enough for a 25 pound cat?
Yes, comfortably, and the extra width helps with turning. Twenty-five pounds is at the upper end of domestic cat size, so interior depth and room to lie down matter more than raw length, and this box delivers both. If your cat is also very tall in the body, check the 12.99 inch wall height against any entry difficulty before ordering.
This is the pick for a large male cat who marks outside the box, and the 4.7 rating reflects how well the design solves that one problem.
6. Cumrige Automatic Litter Box – Best Self-Cleaning Unit for Big Cats
Cumrige Automatic Litter Box,Safety Sensor,App Control,95L Large Capacity
95 L roller drum
2.2 to 33 lbs weight range
15 L waste bin for 15 days
Safety sensors included
Pros
- Very large 95 L drum gives big cats room to move
- Sensors pause the cycle when a cat is inside
- 15 L waste bin stretches time between services
- Quieter than many automatic models
Cons
- App needs 2.4G WiFi only
- Bulky at nearly 27 inches tall and 30 pounds
- Enclosed drum deters cats who prefer open boxes
Automatic boxes get disqualified for large cats more often than any other category, and the reason is almost always the litter bed size. This one clears that bar with a 95 liter roller drum and an explicit weight range of 2.2 to 33 pounds. That range is the number most large-cat owners search for, because it means a 20 to 25 pound cat is within spec rather than at the edge of it.
The safety system matters more here than in a smaller unit, since a large cat is more likely to be inside during a rotation. Advanced sensors detect cat presence and pause the cleaning cycle, and the deodorizing design is built to prevent leakage and odor from the waste bin rather than managing them after the fact.
The waste bin holds 15 liters, which reviewers describe as roughly up to 15 days before a full clean-out, and that is a real advantage if you travel or simply do not want to scoop. It ranks at the top of its category and has 3438 ratings averaging 4.3 stars. That is the lowest average in this roundup, and the reason shows up clearly in the one-star reviews: setup and app connectivity.
The app is the main friction point. It runs on 2.4G WiFi only, so if your home network is dual-band you will need a separate 2.4G network or a router adjustment before it will connect. That is a real setup step, not a plug-and-play experience, and it accounts for most of the unhappy reviews.
Size is the second consideration. At 19.69 by 21.65 by 26.18 inches and 30.4 pounds, this unit needs dedicated floor space in a spot you do not mind looking at every day. And the drum form factor is enclosed, so a cat used to open-top pans may need a transition period. If you want the full picture on self-cleaning options, our automatic litter box roundup compares more models side by side.
Will a 25 pound cat fit comfortably in this drum?
Inside the weight range, yes, and reviewers with large cats report enough room to move and turn. The drum is sized for multiple cats, so the space is not the constraint here. What can be the constraint is the entry motion, since a cat stepping up into a rotating drum has to clear the lip, and that takes some getting used to.
Plan a two-week transition. Leave the unit in manual mode, let your cat use it as a static box, and only enable the automatic cycle once they are entering and exiting comfortably on their own.
Is the app worth the setup hassle?
Only if you want remote functions. Remote cleaning, waste disposal notifications, litter change reminders and health tracking are genuinely useful for owners away from home. If you just want the box to run its cycle automatically, the app is optional and you can skip the WiFi work entirely.
Choose this automatic unit if litter bag changes are your main reason for wanting one. Otherwise the open-top automatic later in this roundup is quieter in design and easier to live with.
7. Happypaw XXXL Open-Top Automatic Box – Best for Senior Large Cats
Happypaw XXXL Open-Top Automatic Self Cleaning Litter Box for Multiple Cats
Open top with 55 x 42 cm entrance
Low threshold entry
12 L waste drawer
3 year warranty
Pros
- Open top removes the trapped feeling of enclosed automatics
- Low threshold is accessible for senior cats
- 12 L waste drawer stretches time between services
- Grates snap back against the wall instead of hanging in the box
Cons
- Entry height is tall so kittens need steps
- Some faint waste odor on a clean cycle
- Heavier than manual open pans
The biggest advantage of this automatic unit is the one its competitors cannot offer: it is genuinely open on top. There is no drum, no hood and no roof, so a large cat can look down into the box, see out, and stand tall without feeling enclosed. For a cat that has spent years in open-top pans, that removes the single biggest objection to going automatic.
The entrance is 55 by 42 centimeters with a low threshold, and the manufacturer states the unit is intended for cats 6 months and older and at least 15 centimeters tall. It also comes with a 3 year warranty and 24-hour customer support, which is the longest warranty of any product in this roundup and a genuine differentiator on a purchase of this size.
Cleaning design is thoughtful. The tray is non-stick and waterproof, there is an active odor eliminator, and the waste bin is sealed with a silicone gasket. The waste drawer holds 12 liters, which works out to about 20 days between services for a single cat. Reviewers with 441 ratings at 4.6 stars praise the roominess and the retractable grates that snap back against the wall rather than hanging in the middle of the box where they get soiled.
There is an internal contradiction in the design worth knowing before you buy. The box advertises a low threshold for senior and short-legged cats, yet reviewers also note the entry height is fairly tall overall, so kittens will need a step. If you have both a senior and a kitten, the senior is served well and the kitten needs a ramp.
At 24 pounds and 17 by 26 by 21 inches, this is a substantial piece of furniture. A few owners detected a faint waste odor on an otherwise clean cycle, which is a small step back from the fully sealed systems. And auto-clean should stay off for any cat under the stated age or height threshold.
Is an open-top automatic actually better than a manual pan?
For a senior large cat, usually yes, because it combines the accessibility of an open box with automated cleaning. The 15 centimeter minimum height rule exists for a reason: a small cat in an automatic drum is a safety question, not a preference one. For a fully grown large cat, the open top removes the enclosure objection and the low threshold handles the mobility issue.
For a healthy young adult cat who does not mind a manual scoop, a good open pan is simpler and lasts longer with no electronics to fail. Automation is worth it when the reason is your cat, not your schedule.
How does the 3 year warranty compare?
It is the strongest in this roundup. Most manual pans carry no stated warranty at all, and automatic models commonly offer a shorter window, so a 3 year term with 24-hour support changes the risk calculation on a purchase of this size. Check the terms for what is covered, since moving parts and sensors are often excluded.
This is the pick for an older large cat whose owner wants fewer scoop-outs without putting them in an enclosed drum.
8. Pematar XXL Stainless Steel Litter Box – Best Oversized Stainless Box
Pematar® XXL Stainless Steel Litter Box with Lid for Multiple & Big Cats
26 x 18 x 12 in stainless interior
Overlapping 12 inch sides
Flush plastic guard
Non-slip base
Pros
- Truly oversized interior fits 20 to 25 lb cats
- 12 inch sides stopped high-spraying cats
- Stainless base shows no staining or rust
- Overlapping guard means no seam leaks
Cons
- Some metal edges are not fully smoothed
- Occasional boxes arrive dented in transit
- One owner found the tray less non-stick than advertised
This is tied for the highest-rated product in the roundup at 4.8 stars across 887 ratings, with 90 percent of reviews at five stars, and the rating reflects genuine size rather than scoring inflation. The interior measures 26 inches long by 18 inches wide by 12 inches high, which is wider than every other box here and the reason owners with 20 to 25 pound Maine Coons report a comfortable fit.
The design detail that sets it apart is the flush plastic guard that overhangs inside the pan. Because the guard overlaps the stainless edge rather than butting against it, there is no seam for urine to seep through and drip onto the floor. Several owners specifically called out that they have never seen moisture outside the box, which is the most common complaint about stainless designs that use a raised lip.
The surface is described as non-slip, non-stick and residue-free, and the base shows no staining or rust. The product is rated for a service life of at least 3 to 5 years, and at 7.05 pounds the unit is heavy enough to stay put under a large cat without being awkward to move.
The honest complaints here are about finishing, not function. Some owners found metal edges on their box were not fully smoothed and could catch a paw, so run your hand along the rim before setting it down. A few boxes arrived dented from transit, which matters because a dented stainless pan can be difficult to flatten. And one reviewer found the tray less non-stick than advertised, which is worth remembering if you have used clumping litter that has been sitting for a while.
At 26 by 18 inches the footprint is larger than most open pans, so this is a corner-of-the-room box rather than a beside-the-dryer box.
Is this big enough for the largest domestic cats?
Yes. An 18 inch width gives a broad cat clearance on both sides when it turns, and 12 inches of wall height gives room to squat without bracing. Owners of Maine Coons, Ragdolls and overweight cats name those breeds as the intended use, and reviews confirm a 20 to 25 pound cat fits comfortably. Beyond that range, no manual box is really large enough, which is the point at which two boxes or an automatic unit makes more sense.
The overlapping sides also make this a strong match for a sprayer who will not tolerate a hood.
How do I check the edges before use?
Run a flat palm along the entire rim, inside and out, paying attention to the corners where a stainless sheet meets the plastic guard. If you find a rough spot, file it down with a metal file before the first use. It takes five minutes and removes the only safety concern in the review set.
This is our pick for the largest cat in the largest home, and the 4.8 rating is the strongest on this list.
9. So Phresh X-Large Scatter Shield Box – Best Budget High-Back Pan
So Phresh by Petco Scatter Shield High-Back Litter Box Charcoal X-Large 24″ L X 18″ W X 10″ H
24 x 18 x 10 in footprint
Scatter Shield high back
Step-in front entrance
50 percent recycled material
Pros
- High back contains scatter and urine spray
- Step-in entrance is easy for large and older cats
- Sturdy plastic that resists wear
- Made with 50 percent recycled materials
Cons
- 10 inch back is lower than the tallest pans
- Plastic scratches and retains odor over time
Sometimes the right answer is a box that does the basic sizing job well for the least money. This X-large pan measures 24 inches long by 18 inches wide by 10 inches high, which clears the 22 by 18 inch minimum for a large cat with a little length to spare. At 4.8 stars across 468 ratings, with 90 percent five-star reviews, the satisfaction rate matches the highest in the roundup.
The Scatter Shield high back is the working part of the design. It is a tall rear wall rather than uniformly tall sides, which targets the back corner where litter typically ends up when a cat finishes digging and turns to exit. The step-in front entrance keeps the lip low enough for a large or older cat to walk into rather than climb over.
It is also the only box here made with 50 percent recycled materials, which is a genuine plus if you care about that and it does not affect the price. The plastic is described as strong and durable and it resisted wear well in use.
The limitation is height. Ten inches on the back is shorter than the 12 to 14 inch walls elsewhere in this roundup, so a determined digger can put litter over the top, and a heavy sprayer has less wall to work with. If scatter is your primary problem, the taller pans are worth the step up.
Being plastic, it will scratch and can hold odor over a multi-year life. At 2.9 pounds it is also the easiest box here to lift for cleaning, which is a real advantage when you are scooping daily.
Is 10 inches tall enough to contain a large cat’s mess?
Enough for most cases, especially with a normal two to three inch litter fill and a mat in front. It is not enough for the two harder scenarios, which are a cat that kicks litter with force while digging and a cat that sprays over the rim. If either describes your cat, move up to a 12 or 14 inch wall model rather than buying twice.
Because the walls are only tall at the back, the sides stay low, which keeps the box visually open and easy for a cat to step into. That is the accessibility trade you are making.
When is this the right pick over the pricier options?
When you have one large cat, a normal scattering habit, and a limited budget. It covers the sizing requirement, it will not rust, it moves easily, and it does the job without any moving parts. That is the correct amount of box for a lot of households, and spending more only pays off if you have odor, spray or senior-cat problems.
For an off-the-shelf pan that clears the sizing bar, this is the value choice.
10. Lobeve Extra Large Stainless Steel Box – Best Modular Design
Lobeve Extra Large Stainless Steel Litter Box with Lid, Easy-Clean Pan
23.6 x 15.7 x 16 in
Rated for cats up to 25 lbs
Switchable top or front entry
20L plus capacity
Pros
- Stainless pan wipes clean and resists odor and deformation
- Modular design switches enclosed or semi-enclosed
- Dual entry suits different cat temperaments
- Roomy enough for cats up to about 25 lbs
Cons
- More parts and assembly steps than a single-piece pan
- 20 lb litter fill requirement is a lot to start with
- Enclosed setup adds bulk
This is the only box in the roundup you can reconfigure as your cat changes. Tool-free modular assembly lets the lid be set up as fully enclosed or semi-enclosed, and adjustable snap settings switch the entry between top entry and front entry. If you adopt a second cat with different enclosure preferences, you adjust the box instead of buying a second one.
It is rated for cats up to 25 pounds with a capacity of 20 liters or more, and that 25 pound figure matches the largest domestic cats. Dimensions are 23.6 inches long by 15.7 inches wide with a 16 inch assembled height, and the stainless pan is described as resisting odor, waste adhesion and deformation for up to 5 years.
The kit is unusually complete for a box in this category. It includes the lid, a litter mat, a dual-purpose scoop and a filter pedal, so you are not buying accessories separately. The footboard placement is a genuine accessibility feature for older and short-legged cats, giving a low step at the entry.
The cost of flexibility is complexity. There are more parts and more assembly steps than a one-piece pan, and it is a box you will need to take apart to scoop rather than just lift a liner. The recommended 20 pound litter fill is a lot of material to start with, so budget for it before day one.
The 4.5 rating across 1883 reviews is mid-pack for this roundup, and the one-star share is higher than the other manual boxes, which points at assembly friction and the enclosed configuration rather than a fundamental quality problem.
Should I set it up enclosed or semi-enclosed?
Semi-enclosed is the safer starting point for a large cat, because it keeps the back and sides for scatter control while leaving the top open for visibility and airflow. Move to fully enclosed if your cat prefers privacy and your room needs odor containment. Most owners who report success start semi-enclosed and never change.
Top entry or front entry comes down to the cat. Front entry suits arthritic cats and any cat that dislikes crouching. Top entry reduces scatter further and can deter some sprayers, but a very large or tall cat may not want to climb in.
Is this a good match for two cats?
It works for two cats in one location, at 23.6 inches long and rated to 25 pounds. What it does not do is replace two separate boxes in two separate rooms, which is what the n+1 rule asks for in a multi-cat home. For a household with two large cats, use this in one room and add a second box elsewhere.
Pick this one if your cat’s needs change with age or temperament, or if you want stainless with a lid and every accessory in a single purchase.
Buying Guide: Open vs Covered, Plastic vs Steel, and Scatter Control
Get at least 22 by 18 inches of interior space. This is the number that matters most and it is not negotiable for a 15 to 25 pound cat. Length along the spine, width for turning, and interior height for squatting. Every box in this roundup clears the minimum.
Match wall height to the mess. Scatter from digging calls for 10 inches or more, with 12 to 14 inches better for a heavy flinger. Urine spray calls for a high back specifically, and the TownTime pan’s entrance geometry is worth considering if your cat aims at the rim. A high back plus a front lip that forces a full turn covers both patterns.
Check entry height for seniors. For a cat with arthritis or reduced mobility, the front lip should be three to five inches off the floor. Look for a step-in lip or a footboard rather than a raised edge. This one rule eliminates more senior-cat litter box problems than any other feature on the list.
Decide plastic or stainless. Plastic is lighter, cheaper and quieter, and it handles a normal scooping routine easily. Stainless is non-porous, will not absorb urine odor and resists the bacteria that collect in scratches. Multiple large-cat owners pick stainless specifically because they were tired of replacing scratched plastic pans every few years. The trade is cost and the noise of a metal scoop on a metal pan.
Decide open top or covered. Open tops give airflow, visibility and easy monitoring, and most large cats prefer them. Covered boxes and hooded designs reduce odor and scatter and give privacy, at the cost of an enclosed feeling that some cats reject outright. If you are unsure, start open. You can always add a second hooded box elsewhere in the home later.
For automatic boxes, find the weight range first. Many self-cleaning models are built for cats up to 10 or 15 pounds and quietly disappoint everyone else. Look for a stated range that covers your cat, and note the waste bin capacity so you know the interval between services. The drum size matters too, since a small drum in a large cat turns into a toilet overrun.
Do not skip the litter mat. A mat in front of a dropped or open entry catches what lands on the paws on the way out. It is the cheapest scatter fix available and it pairs with every box in this roundup.
Plan the placement. Oversized boxes need a clear floor area, roughly a 30 by 22 inch zone including space to pull the pan out for cleaning. In a small apartment, a corner away from the food bowl and near a draft-free wall works best. Put the box where the cat can observe the room rather than where the cat is cornered.
Transition slowly. Moving from an open pan to a hooded box or an automatic unit is a change in texture, shape and smell all at once. Set the new box beside the old one, leave the old one in place for a couple of weeks, and only remove it once your cat is regularly using the new one. Moving the old litter into the new box helps too, since the familiar smell does most of the work.
Consider the DIY tote route. A large plastic storage tote with a hand-cut entry hole is the most-repeated suggestion in large-cat owner discussions, because a 27 inch tote gives an interior no manufactured pan matches. Cut the entry low on one end for accessibility and leave the other corners solid for scatter control. The tradeoff is that the tote will not sit flush against a wall, and cut plastic edges need smoothing before use.
Count boxes, not cats. In a multi-cat household the standard advice is one box per cat plus one extra, and for two large cats that means three boxes in three different locations. Box sharing works well when cats get along and get worse when they do not.
Frequently Asked Questions
What is the best large litter box for big cats?
The Petphabet Jumbo Hooded Cat Litter Box is our top pick, with a 24.8 by 20 by 16.5 inch interior that clears the 22 by 18 inch minimum large cats need. The high back and removable clear top cut down on litter scatter, and the interior is roomy enough for two cats. For a cat that sprays urine or digs violently, the TownTime pan’s entrance geometry or the 14 inch walls on the IRIS box are stronger choices.
How big should a litter box be for a large cat?
At least 22 inches long by 18 inches wide for a cat in the 15 to 25 pound range. Measure your cat from the base of the tail to the tip of the nose and across the widest part of the ribcage, then add clearance on both sides so the cat can turn without touching a wall. Entry height matters too: keep the front lip at three to five inches or less for senior or arthritic cats.
Are covered litter boxes good for large cats?
They can be, and they are the best choice when odor control matters most, since an enclosure plus a carbon filter reduces smell more than an open pan. The risk is behavioral: some large cats avoid enclosed spaces and soil elsewhere in the home instead. The Amazon Basics hooded box has a swinging door and 23.62 by 17.32 by 16.93 inch interior, so it is spacious enough for a big cat provided your cat tolerates a hood.
Why does my cat keep peeing on the edge of the litter box?
The most common cause is a box that is too small for the cat to squat and turn comfortably, so the cat balances on the rim. Measure your cat and check the box interior against the 22 by 18 inch minimum, then look for a model with a high back or a taller wall. Persistent edge-sitting alongside normal box use can also point to a urinary problem, so mention it to your vet rather than only changing boxes.
How do I stop cats from spraying urine outside the litter box?
Start with a taller back wall and an entry that forces the cat to turn fully inside the box before it can exit, so the rear end stays over the pan. A non-slip base matters too, since a box that shifts under a standing cat can be lifted into position and sprayed around. If spraying continues while normal box use stays normal, treat it as scent-marking behavior or a health question rather than only a box-sizing problem.
Final Verdict: The Best Litter Boxes for Large Cats in 2026
The Petphabet Jumbo Hooded Box wins this roundup because it combines the largest hooded interior with the strongest review volume we saw, and it does so without any compromise on wall height. For an open-top pan, the IRIS XX-Large gives you 30 by 20 inches and 14 inch walls, which is the best scatter control in an open design. For odor and longevity, the Pematar XXL stainless box is the highest-rated pick at 4.8 stars, and the WoofiGo steel pan adds a paw-clearing grate.
Measure your cat first, buy for the wall height your mess actually produces, and add a litter mat in front of whatever you choose. That combination solves most of what large-cat owners call us about.