Litter-Robot 4
Litter-Robot 4 — product image.
11 strengths and trade-offs from our review coverage
Dimension scores carry one of three data source labels: manufacturer specifications, aggregated user reviews, or editorial assessment. No score is a hands-on measurement.
Final score is the weighted average of the dimension scores above — see How we score on /how-we-test/.
Brand: Whisker · Category: Litter Robots
Current price: check current price
price verified 2026-11-07
14,102 customer reviews on Whisker's page · verified 2026-11-07
Available at Whisker · How we make money
Rotating self-cleaning litter box with app insights, laser and weight sensors, and a waste drawer Whisker says can go up to eight days.
Strengths & trade-offs
Summarized from our published coverage: Litter-Robot 4 Review.
What we like
- Rated for up to four cats and cats from 3 to 25 lbs — the widest published multi-cat envelope in its category
- Waste drawer stated to need emptying as little as every 8 days
- Laser and weight sensors with SmartScale per-cat weight tracking, feeding seven days of visit and weight insight in the app
- 4.5/5.0 from 14,102 reviews on the maker's own page, with a visible star breakdown
- 90-day in-home trial, free US shipping, HSA/FSA eligibility
What we don't like
- "As low as $699" listed — the most expensive automatic litter box we cover
- 2.4 GHz Wi-Fi only; the 5 GHz band is not supported
- The three-year warranty is a $129 add-on rather than included
- No camera, so you cannot see the box or the cat from the app
- 24 lbs empty and a 22 × 27 in footprint; it is a large object in the room
- No battery backup option published, so a power cut pauses the machine
| Type | Rotating sifting self-cleaning box |
|---|---|
| Cat weight | 3-25 lbs |
| Multi-cat | Up to 4 cats per unit |
| Entryway | 15.75 x 15.75 in |
| Footprint | 22 x 27 in |
| Weight (empty) | 24 lbs |
| Cleaning cycle | Minutes after exit, delay up to 30 min |
| Sifting | QuietSift technology |
| Sensors | Laser and weight sensors, SmartScale |
| Waste drawer | Up to 8 days between empties |
| Wi-Fi | 2.4 GHz only (5 GHz not supported) |
| Warranty | 1 year included, 3-year plan $129 |
Specifications from the manufacturer product record and retailer listings, verified 2026-11-07.
3-Year Cost of Ownership
| Component | 3-year cost | Source | Verified |
|---|---|---|---|
| Purchase (list price) | $699 | Maker/retailer list price | verified 2026-11-07 |
| Carbon filters + waste drawer liners | not published Five liners are included in the box; the maker publishes no replacement prices for filters or liners. | Litter-Robot 4 review | verified 2026-11-07 |
| Whisker+ membership (optional) | not published Optional, for longer app history only; it does not gate core function and no price is published on the maker page. | Litter-Robot 4 review | verified 2026-11-07 |
| 3-year extended warranty plan (optional add-on — not in the total) | $129 | Maker spec: Warranty | verified 2026-11-07 |
| Total (published costs only) | $699 | ||
The total sums only costs the maker has published on the verified date shown. Replacement filters, liners, trays, food and any optional memberships carry no published price in the record we verified, so they are listed but not summed. Price them at the retailer before committing.
Frequently Asked Questions
How many cats can use one Litter-Robot 4?
Whisker rates one unit for up to four cats, for cats from 3 to 25 lbs. Households with more than four cats should plan on a second unit. Source: Litter-Robot 4 Review
How often does the waste drawer need to be emptied?
Whisker's page states the drawer may need emptying as low as once every 8 days, a best-case figure tied to cat count and litter type. Source: Litter-Robot 4 Review
Can the Litter-Robot 4 connect to 5 GHz Wi-Fi?
No. The product page states the unit requires 2.4 GHz Wi-Fi and that the 5 GHz band is not supported. Source: Litter-Robot 4 Review
What warranty and trial come with the Litter-Robot 4?
A one-year WhiskerCare warranty is included, a three-year plan costs $129, there is a 90-day in-home trial, free US shipping excluding AK, HI and PR, and it is HSA/FSA eligible. Source: Litter-Robot 4 Review
Compare with similar products
See how this product stacks up against the other products we cover in its category: maker-published specs, editor scores and verified prices, side by side.
Related coverage
- Review
Litter-Robot 4 Review
A published-specification review of the Litter-Robot 4: cycle behaviour, laser and weight sensors, multi-cat limits, the 14,102-review record on Whisker's own page, consumables and warranty.
- Best List
Best Automatic Litter Box for Multiple Cats: 5 Editor Picks
Five automatic litter boxes ranked for multi-cat homes — compared on cat count, waste interval, entry size and litter compatibility from their published specifications.
- Comparison
Litter-Robot 4 vs PETKIT Purobot Max Pro 2
Two rotating self-cleaning litter boxes compared head to head from their own pages: capacity, multi-cat limits, sensors vs camera, litter compatibility, warranty and listed price.