Best litter boxes for multiple cats, ranked by published specs
Ranking methodology
Ranked by manufacturer-published data only — waste drawer capacity, maximum cat weight — with models missing those figures ranked last. RobotMatchup has not physically tested these units and no position here reflects hands-on use.
In a multi-cat home the drawer fills several times faster, so published capacity matters most, followed by the rated cat weight range and whether the maker publishes per-cat weight sensing rather than a single total.
21 models qualify · top 10 shown · figures published by the manufacturers
- 1
PETLIBRO Luma Smart Litter BoxBuy now$599.99- Waste drawer capacity
- 11 L
- Maximum cat weight
- 22 lbs
A WiFi litter box that analyses waste for health insights, rated for up to 10 cats between 2.2 and 22 lb.
- 2
Petkit Purobot UltraBuy now$799.99- Waste drawer capacity
- 10 L
- Maximum cat weight
- 22 lbs
Petkit's top model, with an AI camera that recognises individual cats and a mechanism that seals and replaces waste bags automatically.
- 3
Meowant MW-SC09 PlusBuy now$639.99- Waste drawer capacity
- 6.7 L
- Maximum cat weight
- 30 lbs
An extra-large 106 L multi-cat box with an 8.27 in entrance, dual-layer silicone liner and a 36 dB motor.
- 4
Whisker Litter-Robot 5 ProBuy now$899- Waste drawer capacity
- Not published
- Maximum cat weight
- 30 lbs
Litter-Robot 5 with dual AI cameras for live monitoring and cat identification, plus WasteID waste-type detection for homes with up to 5 cats.
- 5
Popur S7Buy now$649.95- Waste drawer capacity
- 11 L
- Maximum cat weight
- Not published
Open Split Litter System with an external sealed waste bin rated for about 35 days for one cat, weight sensing, and dual-band Wi-Fi app control.
- 6
Whisker Litter-Robot 5Buy now$799- Waste drawer capacity
- Not published
- Maximum cat weight
- 30 lbs
Whisker's latest self-cleaning litter box, adding WasteID waste-type detection and weight tracking from 3 to 30 lb.
- 7
Casa Leo Leo's Loo TooBuy now$599.99- Waste drawer capacity
- 9.5 L
- Maximum cat weight
- 20 lbs
Casa Leo's WiFi litter box that sifts after each use and runs a UV-C sanitising light over the tray.
- 8
Petkit Purobot Max Pro 2Buy now$529.99- Waste drawer capacity
- 8 L
- Maximum cat weight
- 22 lbs
Petkit's camera-equipped flagship with precision weight sensors and per-cat health tracking.
- 9
Petkit Purobot Max 3Buy now$399.99- Waste drawer capacity
- 7 L
- Maximum cat weight
- 22 lbs
Petkit's wide-entry self-cleaning box with a 7 L side waste bin and a four-part OdorVoid odour system.
- 10
Meowant MW-SC02Buy now$229.99- Waste drawer capacity
- Not published
- Maximum cat weight
- 22 lbs
A 75 L box with a 6.8 in entrance, app health monitoring and a 38 dB motor, rated for cats from 3.3 to 22 lb.
Side-by-side data
| # | Model | Price | Multi-cat suitable | Maximum cat weight | Waste drawer capacity | Proprietary litter required |
|---|---|---|---|---|---|---|
| 1 | PETLIBRO Luma Smart Litter Box | $599.99 | Yes | 22 lbs | 11 L | No |
| 2 | Petkit Purobot Ultra | $799.99 | Yes | 22 lbs | 10 L | No |
| 3 | Meowant MW-SC09 Plus | $639.99 | Yes | 30 lbs | 6.7 L | No |
| 4 | Whisker Litter-Robot 5 Pro | $899 | Yes | 30 lbs | Not published | No |
| 5 | Popur S7 | $649.95 | Yes | Not published | 11 L | No |
| 6 | Whisker Litter-Robot 5 | $799 | Yes | 30 lbs | Not published | No |
| 7 | Casa Leo Leo's Loo Too | $599.99 | Yes | 20 lbs | 9.5 L | No |
| 8 | Petkit Purobot Max Pro 2 | $529.99 | Yes | 22 lbs | 8 L | No |
| 9 | Petkit Purobot Max 3 | $399.99 | Yes | 22 lbs | 7 L | No |
| 10 | Meowant MW-SC02 | $229.99 | Yes | 22 lbs | Not published | No |
Positions follow the published figures named in the methodology above. No unit on this page has been used, owned, or tested by RobotMatchup.