Why it matters
Litter-Robot 4 sifts waste out of the litter bed after each visit and drops it into a lined drawer, so the only routine job is emptying that drawer. Whisker rates it for up to four cats, each at least 3 lb (1.4 kg) for automatic mode.
The Whisker app shows waste and litter levels, activity and each cat's weight after a visit. It takes any clumping litter, so you aren't tied to one brand. This listing is the core bundle, which adds three OdorTrap refills, ten waste drawer liners, cleaner wipes, two carbon filters and a LitterTrap mat.
Who it's for, and who should skip it
Good fit if
- Multi-cat homes (up to 4)
- Owners who want weight tracking
- Any clumping litter
Look elsewhere if
- Homes without a level spot near an outlet
- Cats that are afraid of moving parts
- Kittens under the maker's minimum weight
Pros and cons
Pros
- Four-cat rating
- Any clumping litter
- Weight and waste tracking in the app
Cons
- Highest price
- Tall: 31 in
- Needs a firm floor for accurate weights
Limitations to weigh
- Set it on a hard, level floor near an outlet. Weight sensors read wrong on carpet or uneven tile, which can stop or trigger cycles.
- Automatic cycling has a minimum cat weight; keep automatic mode off for kittens under it and run cleans manually.
- Empty the waste bin before it's full and keep spare bags; an overfull bin is the most common cause of a stalled cycle.
- Running costs come from the bags, liners, filters and litter the maker specifies. The compatibility checker lists refills that state they fit.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Material | Plastic | Retailer |
|---|---|---|
| Dimensions (seller) | 24"L x 24"W x 31"H | Retailer |
| Product weight | 24 pounds | Retailer |
| In the pack | 1 Count | Retailer |
| In the box | Litter-Robot 4 | Retailer |
| Model number | LR4-0301-00-CA | Retailer |
| Warranty | WhiskerCare | Retailer |
| Cats (maker-stated) | 4 cats | Retailer |
| Minimum cat weight (maker-stated) | 3 lbs | Retailer |
| Litter (maker-stated) | clumping litter | Retailer |
Alternatives worth comparing
More self-cleaning litter boxes we cover
Final verdict
The safest bet for two to four cats if the price fits.
Where to buy
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