Self-cleaning litter boxes · updated 2026-09-29

An automatic litter box is only as safe as the smallest cat it can feel.

Every box here starts its cycle once a sensor decides the cat has gone. So this catalog leads with the lightest cat each maker says its sensor detects, then works out the two numbers the box leaves to you: how many days the drawer really lasts with one, two or three cats, and what its trays or cartridges cost a month.

39 boxes · 13 brands · $100–$899 · 20 with stated anti-pinch protection · 9 that need a proprietary consumable

Browse the catalogHow to read a litter box spec sheet

The kitten gate, across the catalog

Detects cats of 2.6 lb or lessroughly a three-month-old kitten
7
Detects from about 3 to 3.5 lbmost boxes; three to four months
20
Age rule only, no weight publishedusually six months
7
Neither publishedrun these manually for any kitten
5

The lowest published threshold is 2.2 lb, on the Neakasa M1 Plus and 2 others. Below a box’s threshold, run it in manual or kitten mode. Why the weight matters.

5 ways to get the waste out of the box

Rotating drum

21 models · from $219

An enclosed globe turns and sifts clumps through a screen into a drawer. The most common design, and the one with the most published safety data.

Open-top

8 models · from $169

No hood or globe over the cat; the bowl tilts or rotates beneath an open rim. Suits big cats and cats that avoid enclosures.

Crystal tray

6 models · from $100

A rake sweeps a disposable crystal tray that you throw away every few weeks. Cheap to buy, recurring to run.

Flushing

2 models · from $469

Plumbed to a water line and a drain; washes itself and sends waste down the pipe. Nothing to empty, a lot to install.

Rake

2 models · from $220

A comb travels across a fixed litter bed and pushes clumps into a bin. Low and pan-like, with more litter exposed.

Every box in the catalog

Filter by maker, mechanism, litter and price. The default order puts the boxes that detect the lightest cats first, because that is the figure that decides whether a box is safe to automate around a young or small cat. Tick up to three to line their specifications up in one table.

Must have

39 boxes found

Lists built from the catalog, each saying what it ranks on

Automatic Litter Boxes for Two or More Cats, by Days Between Emptying

22 qualifying boxes

Ordered by days between emptying for two cats: drawer litres ÷ (2 × 0.7 L a day), then by price.

Self-Cleaning Litter Boxes Rated for Large Breeds

10 qualifying boxes

Every box rated by its maker for cats of 25 lb or more, ordered by that rating and then by price.

Automatic Litter Boxes That Detect the Smallest Cats

27 qualifying boxes

Every box with a published minimum detection weight, ordered by that weight and then by the maker's minimum age.

What Tray, Cartridge and Refill-Ring Litter Boxes Cost to Run

9 qualifying boxes

Every box that needs a proprietary consumable, ordered by monthly cost per cat at the maker's published price and usage; boxes whose maker publishes too little to work it out come last.

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