Litter Boxes
Litter-Robot Litter Boxes
Whisker’s sifting globe — the box rotates after use, dropping clumps into a sealed drawer below. The most automated option in the category, and the most expensive.
What changed: The Litter-Robot 3 and 3 Connect that our old review covered have been discontinued. The current line is the Litter-Robot 4, the EVO and the Litter-Robot 5.
Litter-Robot products
Current line-up Checked against the maker or a major retailer. Checked 2026-08-01
| Model | Mechanism | Litter type | Notes |
|---|---|---|---|
| Litter-Robot 4 | Rotating sift globe | Any clumping litter | OdorTrap and OmniSense detection |
| Litter-Robot EVO | Rotating sift globe | Any clumping litter | Simplified alternative to the 4 |
| Litter-Robot 5 | Rotating sift globe | Any clumping litter | Current flagship |
| Litter-Robot 3 / 3 Connect | Rotating sift globe | Any clumping litter | Discontinued — the model our review covered |