Best Self Cleaning Litter Boxes · Whisker · Updated June 2026
Litter-Robot 4: specs and price (2026)
Litter-Robot 4 has a US price of $699 (MSRP 'as low as $699', base unit (whisker.com)). Below is its full, sourced spec sheet — every value links to the source and the date we captured it.
Specifications
| Price (US) | $699 MSRP 'as low as $699', base unit (whisker.com) |
|---|---|
| Brand | Whisker |
| Released | 2022 |
| mechanism | rotating |
| capacity cats | 4 |
| waste drawer capacity | 8–13 gal liner (approx. 30–49 L) |
| app connectivity | Yes |
| weight sensor | Yes |
| litter type | clumping |
| dimensions in | 22 x 27 x 29.5 in |
| release | 2022 |
Source: whisker.com (verified 2026-06-19) · corroborated by litter-robot.com. Price ('as low as $699'), 22x27 in footprint x 29.5 in height, up to 4 cats (3-25 lbs), 24 lb empty weight, SmartScale weight sensor and 2.4 GHz Wi-Fi app all confirmed on whisker.com 2026-06-19. Release announced May 10, 2022 (Whisker PR Newswire). Waste drawer expressed as liner size; manufacturer states up to 8 days single-cat between empties.
Frequently asked questions
How much does the Litter-Robot 4 cost?
The Litter-Robot 4 has a US price of $699 (MSRP 'as low as $699', base unit (whisker.com)), as of 2026-06-19.
When was the Litter-Robot 4 released?
The Litter-Robot 4 was released 2022.
What are the Litter-Robot 4's key specs?
Litter-Robot 4 (Whisker): mechanism rotating, capacity cats 4, waste drawer capacity 8–13 gal liner (approx. 30–49 L), app connectivity Yes, weight sensor Yes. Full sourced spec sheet verified 2026-06-19.
How it compares
Compare with
Cheaper self cleaning litter boxes
- Leo's Loo Too $599.99
- PETKIT Pura X $599
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- Litter-Robot 3 Connect $549
- CatGenie A.I. $499
- PetSafe ScoopFree SmartSpin $399.99