Purobot Ultra vs Litter-Robot 5
Cross-brand multi-cat rivals at a similar price
Petkit Purobot Ultra
Buy now$799.99
Currently listed at $799.99 on petkit.com against a regular price of $899.99.
List price · checked Oct 27, 2026Buy now
Whisker Litter-Robot 5
Buy now$799
Whisker lists the unit from $799; the Litter-Robot 5 Pro variant starts at $899.
List price · checked Oct 27, 2026Buy now
Verdict
Litter-Robot 5 has the lower list price ($799 vs $799.99). On the attributes both makers publish with a clear better direction, the published figures favour Purobot Ultra on 1 and Litter-Robot 5 on 3. This summary uses manufacturer-published data only; we have not tested either model.
Key differences
| Attribute | Purobot Ultra | Litter-Robot 5 |
|---|---|---|
| List price | $799.99 | $799 |
| Maximum cat weight | 22 lbs | 30 lbs |
| Minimum cat weight | 3.3 lbs | 3 lbs |
| Proprietary waste bags required | Yes | No |
| Warranty | 24 months | 12 months |
| Litter type required | Clumping clay, tofu or mixed litter, particle length up to 12 mm | Clumping clay litter |
| Cleaning cycle trigger | Automatic after the cat exits, with app scheduling | Weight sensor starts the cycle after the cat exits; WasteID identifies waste type |
| Odor control method | Auto-sealed waste bags with contactless packing | WasteID-targeted odor control with sealed waste drawer |
| Power source | AC adapter, 12V/4A | AC power |
Who should buy which
- Choose the Purobot Ultra if you prioritise Warranty, based on published figures.
- Choose the Litter-Robot 5 if you prioritise a lower list price, Maximum cat weight, Minimum cat weight and Proprietary waste bags required, based on published figures.
Where the published data differs
Every line below is computed from the two manufacturers’ own figures. Attributes neither brand publishes are omitted.
- Litter-Robot 5 lists at $799, $0.99 below Purobot Ultra at $799.99.
- Maximum cat weight: Litter-Robot 5 30 lbs versus Purobot Ultra 22 lbs (36% more). Published data favours Litter-Robot 5.
- Warranty: Purobot Ultra 24 months versus Litter-Robot 5 12 months (100% more). Published data favours Purobot Ultra.
- Minimum cat weight: Purobot Ultra 3.3 lbs versus Litter-Robot 5 3 lbs (10% more). Published data favours Litter-Robot 5.
- Proprietary waste bags required: published for Purobot Ultra, not for Litter-Robot 5.
- Litter type required: Purobot Ultra — Clumping clay, tofu or mixed litter, particle length up to 12 mm; Litter-Robot 5 — Clumping clay litter.
- Cleaning cycle trigger: Purobot Ultra — Automatic after the cat exits, with app scheduling; Litter-Robot 5 — Weight sensor starts the cycle after the cat exits; WasteID identifies waste type.
- Odor control method: Purobot Ultra — Auto-sealed waste bags with contactless packing; Litter-Robot 5 — WasteID-targeted odor control with sealed waste drawer.
Full specification comparison
| Attribute | Purobot Ultra | Litter-Robot 5 |
|---|---|---|
| Multi-cat suitable | Yes | Yes |
| Minimum cat weight | 3.3 lbs | 3 lbs |
| Maximum cat weight | 22 lbs | 30 lbs |
| Waste drawer capacity | 10 L | Not published |
| Litter type required | Clumping clay, tofu or mixed litter, particle length up to 12 mm | Clumping clay litter |
| Proprietary litter required | No | No |
| Proprietary waste bags required | Yes | No |
| Subscription required | No | No |
| Cleaning cycle trigger | Automatic after the cat exits, with app scheduling | Weight sensor starts the cycle after the cat exits; WasteID identifies waste type |
| Adjustable cycle delay | Yes | Yes |
| App control | Yes | Yes |
| Weight sensing | Yes | Yes |
| Health monitoring | Yes | Yes |
| Odor control method | Auto-sealed waste bags with contactless packing | WasteID-targeted odor control with sealed waste drawer |
| Entry height | 10.43 in | Not published |
| Interior dimensions | Not published by either | Not published by either |
| Footprint | 20.94 x 32.2 x 24.09 in | Not published |
| Operating noise | Not published by either | Not published by either |
| Power source | AC adapter, 12V/4A | AC power |
| Battery backup | No | Not published |
| Warranty | 24 months | 12 months |