9 Best Automatic Litter Boxes for Large Cats (October 2026)

The best automatic litter boxes for large cats include the Neakasa M1 Plus Automatic Cat Litter Box for cats up to 33 lb, the Cumrige Automatic Litter Box for a large stated drum, and the Mimfam Automatic Self Cleaning Litter Box for a measured top entrance.

On this page (5 sections)

1. What is the best automatic litter box for large cats?
2. How do interior space and entry dimensions affect fit?
3. Which automatic litter box features matter for big cats?
4. How can you check whether a box fits your large cat?
5. Which automatic litter box should you choose for a big cat?

The best automatic litter box for large cats in this roundup is the Neakasa M1 Plus, which supports cats up to 33 lb and uses an open-top design. Cumrige also states a 33 lb limit, while Mimfam is the clearest pick if you want a measured entrance to compare with your cat.

A large exterior footprint doesn't always mean a roomy litter bed. We compared stated weight limits, entry details and interior capacity, and called out where a key fit measurement isn't stated.

For background on how these machines work, see Automated Litter Box for Cats: Explained and our overview of automatic litter box types. If you're still weighing the tradeoffs, Do Automatic Cat Litter Boxes Really Work? covers what automation can and can't do.

Our picks at a glance

1. 1
   Best for cats up to 33 lb

   Neakasa M1 Plus Automatic Cat Litter Box

   9.7/10 our score

   See it on Amazon
2. 2
   Best for a large stated drum

   Cumrige Automatic Litter Box

   9.6/10 our score

   See it on Amazon
3. 3
   Best for a measured top entrance

   Mimfam Automatic Self Cleaning Litter Box

   9.5/10 our score

   See it on Amazon

4. 4

   PetPivot Open Top Self Cleaning Cat Litter

   Best for app-free operation
   Check it
5. 5

   PETLIBRO Automatic Litter Box with AI-Camera Waste

   Best for large cats with a step
   Check it
6. 6

   Lohhuby Automatic Cat Litter Box Self Cleaning

   Best for a smaller open design
   Check it
7. 7

   PETKIT PuraMax 2 Odor Free Automatic Cat

   Best for low entry access
   Check it
8. 8

   ZeaCotio Self Cleaning Cat Litter Box

   Best for an open-top layout
   Check it
9. 9

   teweoa Automatic Cat Litter Box with Wide

   Best for cats up to 17 lb
   Check it

What is the best automatic litter box for large cats?

The best fit depends on your cat's weight, body shape and comfort entering the box. For a Litter-Robot comparison focused on larger cats, see our Litter-Robot options for large cats.

The Neakasa and Cumrige have the highest stated limits here, and Mimfam publishes a specific entrance measurement.

1

Neakasa M1 Plus Automatic Cat Litter Box: Best for cats up to 33 lb

9.7/10Our score

• Open-top design
• Supports cats from 3.3–33 lb
• 22 x 20 x 26 in

Its open-top layout and stated 33 lb limit make it a strong starting point for large cats. The exact usable floor and entry dimensions aren't stated, so measure your cat and available space.

See it on Amazon

Pros

• Highest stated weight limit here
• Open-top layout
• 11.2 L waste bin

Cons

• Entry dimensions aren't stated
• App uses 2.4 GHz Wi-Fi

Neakasa is the strongest starting point for a large cat because it states support for cats from 3.3 to 33 lb and uses an open-top layout. The company describes that design as helpful for larger breeds moving from a traditional litter box.

Its 22 x 20 x 26 in outer dimensions help you plan floor space, but they don't show the exact area your cat can use inside. Measure your cat's length and turning space against the opening before deciding.

The M1 Plus has an 11.2 L waste bin and 7.2 L litter capacity. Neakasa says the bin supports 7–14 days of use, though the actual interval depends on the number of cats and how often they use it.

If several cats share a Litter-Robot, compare the best Litter-Robot models for multiple cats.

The app uses 2.4 GHz Wi-Fi and can track activity by cat. Choose it when a high stated weight limit and open access matter most, then confirm the entry fits your cat's body.

2

Cumrige Automatic Litter Box: Best for a large stated drum

9.6/10Our score

• 95 L roller capacity
• Supports cats from 2.2–33 lb
• 19.69 x 21.65 x 26.18 in

Cumrige gives a 95 L roller capacity and a 33 lb cat limit. Its external dimensions don't show how much room a large cat has inside, so check the usable opening and floor area.

See it on Amazon

Pros

• 95 L roller capacity stated
• 33 lb weight limit
• 15 L waste bin

Cons

• Entry dimensions aren't stated
• App uses 2.4 GHz Wi-Fi

Cumrige combines a stated 33 lb limit with a 95 L roller capacity, giving large-cat households two useful numbers to compare. Its outer dimensions are 19.69 x 21.65 x 26.18 in.

The 15 L waste bin is rated for up to 15 days, and the unit is described for clumping litter. Treat that duration as a maker estimate, since household size and use affect how quickly the bin fills.

The Tuya Smart app supports remote controls and health tracking over 2.4 GHz Wi-Fi. If you prefer a box without app setup, consider the best compact automatic litter box options and compare their footprints and controls.

Cumrige doesn't state the entry dimensions, so its 95 L roller capacity alone can't confirm that a broad or long-bodied cat will have enough turning room. It is a reasonable candidate when the 33 lb limit matters, provided the internal fit checks out.

3

Mimfam Automatic Self Cleaning Litter Box: Best for a measured top entrance

9.5/10Our score

• 16.33 x 15.35 in entrance
• Open-top design
• 21.26 x 20.28 x 24.02 in

The measured 16.33 x 15.35 in top entrance helps you compare the opening with your cat's shoulders and turning space. No cat weight limit is stated.

See it on Amazon

Pros

• Entry dimensions stated
• Open-top design
• 10 L waste container

Cons

• Cat weight limit isn't stated
• Usable floor dimensions aren't stated

Mimfam stands out for giving a specific top entrance measurement: 16.33 x 15.35 in. That lets you compare the opening with your cat's shoulder width before buying.

The open-top unit measures 21.26 x 20.28 x 24.02 in overall. Its 10 L waste container is designed for multi-cat use, and Mimfam says one cat may go up to 10 days between manual bin emptying.

Four pairs of infrared sensors and three hall sensors are designed to pause the cleaning process when a cat is inside. The stated 32 dB operating level is another detail for homes where the box sits near living areas.

Mimfam doesn't state a maximum cat weight or usable floor dimensions. Pick it when the measured entrance is your key comparison point, but confirm the interior and weight guidance for your cat.

How do interior space and entry dimensions affect fit?

Interior space and entry size matter because your cat needs room to enter, turn and dig without crowding. Use the dimensions as a starting point, then check the actual usable area and any weight guidance.

An open-top design can make entry more visible and remove an enclosed doorway, but it doesn't tell you how wide the litter bed is. For a broader look at open and enclosed styles, start with What Types of Automatic Litter Boxes are There? and What is an Enclosed Automatic Litter Box?.

Neakasa, Cumrige and PETLIBRO give weight limits, while Mimfam gives an entrance measurement. For a closer look at two open designs, see our CATLINK Open-X review and PETKIT Pura Max review.

Which automatic litter box features matter for big cats?

For big cats, prioritize a stated weight limit and enough measured room to turn before comparing apps, odor controls or waste-bin size. A feature can be useful, but it can't replace a fit check.

PETLIBRO Luma is described for cats up to 22 lb and has an open-top layout with a removable step. It includes a sealed 11 L bin, multi-cat recognition, app controls and odor control using a fan and carbon deodorizer.

Its AI analysis and video recording require a subscription, while livestreaming is free. The larger 23.3 x 22.5 x 28.1 in exterior needs a planned space, and the 22 lb limit may exclude heavier cats.

5

PETLIBRO Automatic Litter Box with AI-Camera Waste: Best for large cats with a step

9.3/10Our score

• Open top
• For cats up to 22 lb
• Removable step

PETLIBRO pairs an open top with a removable step and a stated limit of 22 lb. Its wider outer size may suit some homes, but compare the usable area and entry with your cat.

See it on Amazon

Pros

• Open-top layout
• Removable step
• Supports cats up to 22 lb

Cons

• Weight limit is below the 33 lb picks
• AI analysis and video recording require a subscription

Choose PETLIBRO if your cat is within the stated limit and the step helps with entry. Its camera and tracking tools add features for households that want to monitor litter habits, but they aren't a substitute for checking interior room.

Lohhuby is described for medium cats and kittens, with an open design and 20.67 x 15 x 20.67 in outer dimensions. It has app control and an inner drum that lifts for cleaning, but the stated intended size makes it a less certain option for a large breed.

6

Lohhuby Automatic Cat Litter Box Self Cleaning: Best for a smaller open design

9.2/10Our score

• Open design
• 20.67 x 15 x 20.67 in
• App control

Lohhuby's open design may work for a medium cat, but it is described for medium cats and kittens rather than large breeds. Compare its compact outer dimensions carefully.

See it on Amazon

Pros

• Open design
• Remote app control
• Inner drum lifts for cleaning

Cons

• Described for medium cats and kittens
• Entry dimensions aren't stated

If your cat is clearly larger than medium, prioritize products with a suitable stated weight limit or verified interior dimensions instead. Lohhuby doesn't state either a maximum weight or entry measurement.

PETKIT PuraMax 2 offers a stated 76 L interior and supports cats from 3.3 to 22 lb. Its 7.87 in low entry, seven infrared sensors and four weight sensors may make it worth considering for cats that need an easier step-up.

7

PETKIT PuraMax 2 Odor Free Automatic Cat: Best for low entry access

9.1/10Our score

• 76 L interior
• Supports cats from 3.3–22 lb
• 7.87 in low entry

PETKIT states a 76 L interior, support up to 22 lb and a 7.87 in low entry. That entry height can help with access, though larger cats still need enough turning room.

See it on Amazon

Pros

• 76 L interior stated
• Low 7.87 in entry
• Four weight sensors and seven infrared sensors

Cons

• 22 lb weight limit
• Not for young pets under 6 months

The 22 lb maximum is the deciding limit for many large cats. PETKIT says the 7 L waste bin supports up to 15 days, and advises against placing the unit on carpets or mats because they can affect sensor operation.

ZeaCotio uses an open-top design with dual safety sensors and app controls. Its 21.6 x 20.47 x 21 in outer dimensions give you a floor-space estimate, but no cat weight limit or entry dimensions are stated.

8

ZeaCotio Self Cleaning Cat Litter Box: Best for an open-top layout

9.0/10Our score

• Open-top design
• 21.6 x 20.47 x 21 in
• Dual safety sensors

ZeaCotio offers an open top and a roomy exterior footprint, but it doesn't state a cat weight limit or entry dimensions. Confirm the usable area before choosing it for a large breed.

See it on Amazon

Pros

• Open-top design
• App control
• Dual safety sensors

Cons

• Cat weight limit isn't stated
• Entry dimensions aren't stated

Treat ZeaCotio as a fit to verify, especially for a large cat whose weight or body length is near the limits of other options. Ask for the usable interior and entry measurements before choosing it.

teweoa has a wide open top, an easy-access step and no app or Wi-Fi requirement. Its stated range is 3–17 lb, so it is better suited to smaller cats than many large breeds.

9

teweoa Automatic Cat Litter Box with Wide: Best for cats up to 17 lb

8.4/10Our score

• For cats 3–17 lb
• Wide open top
• 21.06 x 15.75 x 20.16 in

The wide open top and easy-access step may suit a smaller or shorter-legged cat. Its stated 17 lb upper limit makes it a poor fit for many large breeds.

See it on Amazon

Pros

• Wide open-top design
• Easy-access step
• No app or Wi-Fi needed

Cons

• 17 lb weight limit
• Entry dimensions aren't stated

The unit measures 21.06 x 15.75 x 20.16 in and has an 8 L waste bin. Skip it if your cat weighs more than 17 lb, even if the open entrance looks roomy.

PetPivot offers an open top, an access step and app-free operation. It also describes a clumping delay and tool-free modular disassembly for cleaning.

4

PetPivot Open Top Self Cleaning Cat Litter: Best for app-free operation

9.4/10Our score

• Open-top design
• Access step included
• 21.06 x 15.75 x 21.85 in

PetPivot has an open top, an access step and no app requirement. Its cat weight limit and entry dimensions aren't stated, which makes a careful fit check especially useful.

See it on Amazon

Pros

• Open-top design
• Access step included
• No app or subscription

Cons

• Cat weight limit isn't stated
• Entry dimensions aren't stated

No cat weight limit or entry dimensions are stated, so those are the first things to verify for a large breed. For homes focused on smell, our best automatic litter box for odor control roundup compares that concern separately.

How can you check whether a box fits your large cat?

Measure your cat and compare those measurements with the usable entry and floor area, not just the outside of the unit. For more roomy manual options, compare our extra large cat litter box guide.

Check the stated weight limit too, since a roomy-looking opening doesn't confirm safe supported use.

Measure shoulder width, body length and the space your cat uses to turn around in a regular litter pan. Compare those measurements with the automatic box's entrance and interior, and allow room for normal digging.

If a maker gives only exterior dimensions, ask for the usable entry and litter bed measurements before buying. The PETKIT Pura Max review may help if that model is among your candidates.

Introduce the box gradually by placing it beside the familiar pan and keeping the old option available while your cat investigates. Follow the unit's instructions for cleaning and operation, and watch whether your cat can enter and turn comfortably.

Which automatic litter box should you choose for a big cat?

Choose Neakasa or Cumrige first if your cat weighs up to 33 lb, and compare Mimfam if you need a measured entry. Pick PETKIT PuraMax 2 only for cats within its 22 lb limit when its low entry is useful.

Before buying, confirm the usable interior and entrance dimensions for your cat's body, especially when those measurements aren't stated. A weight limit and an exterior footprint are useful filters, but they don't settle fit on their own.

For a compact home, compare the footprint with our compact automatic litter box guide. If odor control is the larger concern, use the odor-control roundup to narrow that choice.

Our score weighs stated specs and features against what shoppers seeking a large-cat fit need.

Our top 3 picks at a glance

1. 1
   Best for cats up to 33 lb

   Neakasa M1 Plus Automatic Cat Litter Box

   9.7/10 our score

   See it on Amazon
2. 2
   Best for a large stated drum

   Cumrige Automatic Litter Box

   9.6/10 our score

   See it on Amazon
3. 3
   Best for a measured top entrance

   Mimfam Automatic Self Cleaning Litter Box

   9.5/10 our score

   See it on Amazon

Frequently asked questions

What should I measure before buying an automatic litter box for a large cat?

Measure your cat's shoulder width and body length, then compare them with the entry and usable interior dimensions. A box's outside size doesn't tell you how much room remains inside.

Leave space for your cat to enter, turn around and dig without pressing against the walls.

Is an open-top automatic litter box better for a large cat?

An open top can give a cat a more visible entry and avoid the limits of a narrow enclosed doorway. It doesn't guarantee a roomy litter bed, so check the usable area and entry measurements when available.

For more on the tradeoffs, read our guide to enclosed automatic litter boxes.

Does a 33 lb weight limit mean a litter box fits every large cat?

No. A weight limit tells you the supported cat weight, not the space available for turning or digging.

Compare your cat's shape and length with the interior and entry dimensions.

The Neakasa M1 Plus and Cumrige state limits up to 33 lb, but their entry dimensions aren't stated here.

Can a large cat use an automatic litter box with a low entry?

A low entry can make stepping in easier, but the box still needs enough interior space for your cat to turn and dig. PETKIT PuraMax 2 has a stated 7.87 in entry and supports cats up to 22 lb.

Check both access height and weight limit against your cat.

Are automatic litter boxes suitable for multi-cat homes?

Some models are designed for more than one cat, but a large cat still needs adequate room and a suitable weight limit. Neakasa states support for up to 3 cats, while several picks offer multi-cat tracking or larger waste bins.

Check the maker's guidance for your household and keep the waste bin clean.