Litter-Robot 5 Pro vs Litter-Robot 4
Same brand, adjacent models in the range
Whisker Litter-Robot 4
Buy now$699
Whisker lists the unit from $699; colour and bundle options raise the price.
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Where the published data differs
Every line below is computed from the two manufacturers’ own figures. Attributes neither brand publishes are omitted.
- Litter-Robot 4 lists at $699, $200 below Litter-Robot 5 Pro at $899.
- Cleaning cycle trigger: Litter-Robot 5 Pro — Weight sensor starts the cycle after the cat exits; WasteID identifies waste type; Litter-Robot 4 — SmartScale weight sensor starts a countdown after the cat exits (3 lb minimum to register).
- Odor control method: Litter-Robot 5 Pro — WasteID-targeted odor control with sealed waste drawer and carbon filter; Litter-Robot 4 — Sealed waste drawer with carbon filter.
Full specification comparison
| Attribute | Litter-Robot 5 Pro | Litter-Robot 4 |
|---|---|---|
| Multi-cat suitable | Yes | Yes |
| Minimum cat weight | 3 lbs | 3 lbs |
| Maximum cat weight | 30 lbs | Not published |
| Waste drawer capacity | Not published by either | Not published by either |
| Litter type required | Clumping clay litter | Clumping clay litter |
| Proprietary litter required | No | No |
| Proprietary waste bags required | No | No |
| Subscription required | No | No |
| Cleaning cycle trigger | Weight sensor starts the cycle after the cat exits; WasteID identifies waste type | SmartScale weight sensor starts a countdown after the cat exits (3 lb minimum to register) |
| Adjustable cycle delay | Yes | Yes |
| App control | Yes | Yes |
| Weight sensing | Yes | Yes |
| Health monitoring | Yes | Yes |
| Odor control method | WasteID-targeted odor control with sealed waste drawer and carbon filter | Sealed waste drawer with carbon filter |
| Entry height | 15.75 in | Not published |
| Interior dimensions | Entryway 15.75 x 15.75 in; interior height 17.5 in | Not published |
| Footprint | 22 x 27 x 29.9 in | Not published |
| Operating noise | Not published by either | Not published by either |
| Power source | AC power | AC power |
| Battery backup | Not published by either | Not published by either |
| Warranty | 12 months | 12 months |