Litter-Robot EVO
Whisker says the Litter-Robot EVO is for cats from 3 lb to 19 lb, handles up to 2 cats, goes up to 7 days between emptying with one cat, and has a 14.85 in round opening.
Refill cost a year: not published. Why.
Price as of November 2, 2026.
| Limit | Maker figure | Source |
|---|---|---|
| Cat weight, from | 3 lb | whisker.com |
| Cat weight, to | 19 lb | whisker.com |
| Cats, up to | 2 | whisker.com |
| Drawer lasts, one cat | 7 days | whisker.com |
| Opening, across | 14.85 in | whisker.com |
| Dimensions (W x D x H) | 20.6 x 24.3 x 27.6 in | whisker.com |
On our guides
- Three cats: misses a published limit
Compare: Litter-Robot 5 vs 4 vs EVO, Which Litter-Robot to buy, Best automatic litter box.
Maker figures, not our tests. Method.
Amazon listing
We link Litter-Robot EVO by Whisker, White | Automatic Self-Cleaning Cat Litter Box, Compact Space-Saving Design, Adva. Not linked:
- Part or refill: Whisker Litter-Robot EVO Bundle, White | Automatic Self-Cleaning Cat Litter Box, Compact Space-Savin
- Same robot, sold with extras: Whisker Litter-Robot EVO Protection & Insights Bundle, Black- Automatic | Self-Cleaning Cat Litter B
- A different model: Whisker Litter-Robot 4, White - Automatic | Self-Cleaning Cat Litter Box, Helps Reduce Litter Box Od
Litter-Robot EVO refills
No yearly cost. Carbon filter: no Amazon listing of the maker's own part. Odortrap pack: no Amazon listing of the maker's own part names this model.
More limits Whisker publishes
| Limit | Maker figure | Read from |
|---|---|---|
| Warranty | 1 year | whisker.com |
| App | yes | whisker.com |
| Safety sensors | SafeCat System: multi-layer safety system of weight sensors and anti-obstruction technology | whisker.com |
| Step height | 5.6 in | whisker.com |
| Subscription required | no | whisker.com |
Recall check (US and Canada): none found, November 2, 2026.
Other Whisker models we track: Litter-Robot 4, Litter-Robot 5, Litter-Robot 5 Pro.