Every review
10 machines compared, grouped by what they are for rather than by brand or by price.
App · ~35 dB · 9 L litter · all litters except crystal
A mid-priced drum box with an ozone-ion deodorising system and the Smart Life app. It holds up to 9 litres of litter, runs at about 35 dB, and takes everything except crystal.
Best for: A European household that wants a full-featured drum box at the lower end of the price range and already has other Smart Life devices.
≈ 170 €
Open design · cats to 15 kg · 11 L waste · ≤50 dB
An open-topped drum box for cats that refuse enclosed machines, with the widest stated weight range here — up to 15 kg — and 6 infrared plus 4 weight sensors watching the cycle.
Best for: A large cat, or a nervous one that will not enter an enclosed machine — and a household that can put the box somewhere the litter scatter does not matter.
≈ £300 / 315 €
76 L drum · 7 L waste · 20 cm entry · cats 2–8 kg
The best-documented box on this page: PETKIT publishes the drum volume, the internal dimensions, the entry height, the cat weight range and the age limit. It takes any clumping litter except crystal.
Best for: A multi-cat household with adult cats between 2 and 8 kg, a hard floor, and no intention of changing litter type.
≈ 390 €
AI camera · multi-cat recognition · 8 L waste · 35–45 dB
The camera box: a 1080p wide-angle camera with night vision watches the drum, and PETKIT’s app identifies each cat by face and weight. The most expensive machine on this page, and the only one sold on what it sees.
Best for: A multi-cat household that genuinely needs to know which cat did what, and is willing to pay for a camera to answer it.
≈ 600 €
Open design · cats 1.5–10 kg · 32 dB · mineral & bentonite only
The quietest box on this page at a stated 32 dB, open-topped, with the lowest entry weight here — 1.5 kg. Its litter compatibility is the narrowest of the ten, and that is the thing to check first.
Best for: A small cat in a quiet flat, on clay litter, where noise at night is the deciding factor.
≈ £225 / 185 €
Clumping litter · rake · no trays required
The ScoopFree built around ordinary clumping litter instead of crystals, with a waste bin rather than a disposable tray. It is the cheaper box to run of the two, and the one that lets you keep the litter your cat already accepts.
Best for: Anyone who wants the scooping to stop without changing litter brand, and who would rather have no app than a mediocre one.
≈ $220 / £250 / 275 €
Any litter · sifting drum · sealed waste box · app
PetSafe’s drum box: it turns to sift clumps into a sealed waste box, takes any litter, and reports weight and visits to an app. It is the most expensive PetSafe here and the only one that is litter-agnostic.
Best for: A household that wants a sealed drum and the freedom to keep buying whatever litter the cat already accepts.
≈ £400 / 395 €
Crystal litter only · top entry · disposable tray
The hooded, top-entry ScoopFree rakes crystal litter into a covered disposable tray and counts each visit. It is the tidiest box here for tracking, and the one whose running costs are entirely set by PetSafe.
Best for: A single-cat household that wants the least mess on the floor and will accept PetSafe’s consumables for the life of the box.
≈ £245 / 270 €
95 L globe · cats 1–8 kg · 8 L waste · under 35 dB
The largest drum here at a stated 95 litres, with a wide entry, an 8-litre sealed waste bin quoted at 10 to 15 days, and a cleaning cycle that starts two minutes after the cat leaves.
Best for: A multi-cat home with space for a large machine and a preference for plant-based or mixed litter.
≈ £240 / 200 €
Open XXL · cats 1.5–12.5 kg · under 20 dB · 10 L waste
The cheapest genuinely available box here, open-topped, with the lowest stated noise figure of the ten and a 1.5 to 12.5 kg range that covers almost any cat.
Best for: A first automatic box: the price of a mid-range manual setup, an open shape cats accept, and no proprietary consumable.
≈ £135 / 170 €
