Whisker Litter-Robot 4 vs Whisker Litter-Robot EVO
9 sourced fields differ. Highlighted rows show where both values are known and not the same.
What differs, in plain words
Both claim 5 of 6 safety layers in their sources.
| Field | Whisker Litter-Robot 4 | Whisker Litter-Robot EVO (LRE-0301) |
|---|---|---|
| Safety layers claimed | 5 of 6 safety layers claimed. Weight sensor: claimed; Entry sensor: claimed; Anti-pinch: claimed; Open entry: not found yet; Cycle delay: claimed; Stop button: claimed. | 5 of 6 safety layers claimed. Weight sensor: claimed; Entry sensor: claimed; Anti-pinch: claimed; Open entry: not found yet; Cycle delay: claimed; Stop button: claimed. |
| How it cleans | Rotating globe[1] | Rotating globe[2] |
| Minimum cat weight | 3 lb (1.4 kg) claimed[1] | 3 lb (1.4 kg) claimed[3][2] |
| Heaviest cat | 25 lb (11.3 kg) claimed[4] | 19 lb (8.6 kg) claimed[3][2] |
| Cats per unit | 4 claimed[4] | 2 claimed[3] |
| Step-in height (floor to entry edge) | 6.9 in (17.5 cm) claimed[5][6] | 5.5 in (14 cm) claimed[7] |
| Entry opening height | 15.8 in (40 cm) claimed[5] | 14.9 in (37.7 cm) claimed[7] |
| Width | 22 in (55.9 cm) claimed[1] | 20.6 in (52.3 cm) claimed[3][2] |
| Depth | 27 in (68.6 cm) claimed[1] | 24.3 in (61.7 cm) claimed[2] |
| Height | 29.5 in (74.9 cm) claimed[1] | 27.6 in (70.1 cm) claimed[3][2] |
| Unit weight | 24 lb (10.9 kg) claimed[1] | Brand site: 21.5 lb (9.8 kg) claimed[3]. Manual: 21 lb (9.5 kg) claimed[2]. |
| Litter it takes | clumping litter (clay-clumping recommended); litter beads/crystals small enough to pass the screen[1] | clumping litter (clay-clumping recommended); silica beads/crystals small enough to pass the screen (white/translucent not recommended); no plant-based, non-clumping, paper or wood pellets[3][2] |
| App | Whisker app[1] | Whisker app[3][2] |
| Weight sensor | Yes[1] | Yes[2] |
| Entry presence sensor | Yes (laser curtain)[8] | Yes (optical)[9] |
| Anti-pinch | Yes[1] | Yes[2] |
| Default delay before cleaning | 7 min[1] | 7 min[2] |
| Stop button on the unit | Yes[1] | Yes[2] |
| Bags and filters | Ordinary bags and litter, no brand-only refills[1] | Ordinary bags and litter, no brand-only refills[2] |
| Warranty | 12 months (brand claim)[4] | 12 months (brand claim)[3] |
| Drawer lasts, one cat | 7 days claimed[10] | 7 days claimed[3][2] |
Claimed, with a sourceNot found in the sources yetNot claimed anywhere we looked
Sources
- Litter-Robot 4 Instruction Manual (Whisker), p. 5, 10, 12, 19, 21, 24, 28, 29, 35, checked Oct 8, 2026
- Litter-Robot EVO Instruction Manual (Whisker; PDF hosted by RobotShop), p. 1, 5, 14-15, 20-27, 35-37, checked Oct 8, 2026
- Litter-Robot EVO product page, Details / Specs / FAQ, checked Oct 8, 2026
- Litter-Robot 4 product page, specs, FAQ, checked Oct 8, 2026
- Litter-Robot 4 Instruction Manual (Whisker), Dimensions table, p. 10, checked Oct 8, 2026
- Whisker Litter-Robot comparison chart, Size and specifications table, Litter-Robot 4 column, checked Oct 8, 2026
- Litter-Robot EVO Instruction Manual (Whisker; PDF hosted by RobotShop), Dimensions table, p. 5 (PDF page 7), checked Oct 8, 2026
- Litter-Robot 4 Instruction Manual (Whisker), p. 21, checked Oct 8, 2026
- Litter-Robot EVO Instruction Manual (Whisker; PDF hosted by RobotShop), checked Oct 8, 2026
- Litter-Robot 4 Instruction Manual (Whisker), waste drawer / litter level, p. 36 (single-cat figure also on p. 15), checked Oct 8, 2026