PetSnowy SNOW+ vs Whisker Litter-Robot 4
Researched by Riley Hart · prices checked Nov 4, 2026
As of Nov 4, 2026, the PetSnowy SNOW+ costs $529 and the Whisker Litter-Robot 4 costs $699, so the PetSnowy SNOW+ is $170 cheaper. The PetSnowy SNOW+ has a published review score and ranks #6 in our self cleaning litter boxes ranking; the Whisker Litter-Robot 4 is not scored yet. Pick the PetSnowy SNOW+ for limiting litter tracking. Pick the Whisker Litter-Robot 4 for one to four average size cats. The PetSnowy SNOW+ wins 3 of 4 points we can measure (1 tied).
Who wins, point by point
The PetSnowy SNOW+ wins 3 of 4 points we can measure (1 tied). Built from today's prices, the specs and independent tests for these two robots.
| SNOW+ | Litter-Robot 4 | Winner | |
|---|---|---|---|
| Price today | $529 | $699 | SNOW+ |
| 3 year cost | $529 | $1,035 | SNOW+ |
| Warranty | 4 years | 1 year | SNOW+ |
| Cats supported | 4 | 4 | Tie |
- You want to spend less (saves $170)
- You care most about warranty (4 years vs 1 year)
- Best for limiting litter tracking
- Best for one to four average size cats
- Cat weight
- 3.3 to 20 lb
- Max cats
- Up to 4
- Litter
- Clay preferred
- Waste drawer
- 10 L sealed bin
Enclosed globe box with anti tracking walkway for smaller cats
Full PetSnowy SNOW+ review, pros and cons →- Cat weight
- 3 to 25 lb
- Max cats
- Up to 4
- Litter
- Clumping clay
- Waste drawer
- Sealed
Proven Litter-Robot with laser sensing, now Whisker's value pick
Full Whisker Litter-Robot 4 review, pros and cons →Side by side
| PetSnowy SNOW+ | Whisker Litter-Robot 4 | |
|---|---|---|
| Price | $529 | $699 |
| 3 year cost | $529 | $1,035 |
| Our score | 7.5/10 | Not scored yet |
| Rank in Litter box | #6 | #23 |
| Status | on sale | on sale |
| Warranty | Up to 4 years per PetSnowy; 30 day free trial | 1 year (WhiskerCare), extendable to 3 years; 90 day in home trial |
| Cat weight range | 3.3 to 20 lb (Cats.com); PetSnowy says 3.3 lb minimum for automatic mode | 3 to 25 lb (kittens under 3 lb need semi automatic mode) |
| Max cats | Up to 4 recommended | Up to 4 |
| Waste drawer | 10 L auto sealing bin, up to 14 days for one cat (maker claim) | Sealed drawer with carbon filter, as little as once every 8 days (maker claim) |
| Sensors | Radar and weight sensors, anti pinch mechanism | Laser and weight sensors, SmartScale cat weight tracking, SafeCat system |
| App | PetSnowy app with usage tracking and adjustable cleaning time | Whisker app (2.4 GHz WiFi); free 7 day view, Whisker+ optional |
| Litter type | Clumping clay preferred; tofu, pine and crystal listed as working | Clumping clay recommended; crystals only if they pass the screen; plant based and pellet litters not recommended |
| Size | 29.5 x 20 x 25.6 in, 8.7 x 8.7 in entry, 32.19 lb | 22 x 27 in footprint, 29.5 in tall, 15.75 x 15.75 in entry, 24 lb empty |
| Noise | Peak 53 dB per Cats.com | No dB rating published; QuietSift motor |
| Best for | limiting litter tracking | one to four average size cats |
| Skip if | your cat is large or hesitant | your cat is over 25 lb |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
PetSnowy SNOW+
Whisker Litter-Robot 4
- Cats.com: Runner Up in the October 2026 roundup; reliable and well built, but the smaller litter bed may not suit large cats. Source
- The Irish Times: Quiet, no smells and a clean tray in a home test; sensors stopped the drum when a cat entered; app cat ID was less accurate for cats of similar size. Source
Questions buyers ask
Which is better, the PetSnowy SNOW+ or the Whisker Litter-Robot 4?
The PetSnowy SNOW+ has a published review score and ranks #6 in our self cleaning litter boxes ranking; the Whisker Litter-Robot 4 is not scored yet. Pick the PetSnowy SNOW+ for limiting litter tracking. Pick the Whisker Litter-Robot 4 for one to four average size cats.
Which is cheaper?
The PetSnowy SNOW+ at $529, versus $699 for the Whisker Litter-Robot 4, checked Nov 4, 2026. Over 3 years with running costs: $529 vs $1,035.
What is the difference between the SNOW+ and the Litter-Robot 4?
Cat weight range: 3.3 to 20 lb (Cats.com); PetSnowy says 3.3 lb minimum for automatic mode on the SNOW+, 3 to 25 lb (kittens under 3 lb need semi automatic mode) on the Litter-Robot 4. Max cats: Up to 4 recommended on the SNOW+, Up to 4 on the Litter-Robot 4. Waste drawer: 10 L auto sealing bin, up to 14 days for one cat (maker claim) on the SNOW+, Sealed drawer with carbon filter, as little as once every 8 days (maker claim) on the Litter-Robot 4.
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