PetSnowy SNOW+ vs Whisker Litter-Robot EVO
Researched by Riley Hart · prices checked Oct 26, 2026
As of Oct 26, 2026, the PetSnowy SNOW+ costs $529 and the Whisker Litter-Robot EVO costs $599, so the PetSnowy SNOW+ is $70 cheaper. The PetSnowy SNOW+ has a published review score and ranks #4 in our self cleaning litter boxes ranking; the Whisker Litter-Robot EVO is not scored yet. Pick the PetSnowy SNOW+ for limiting litter tracking. Pick the Whisker Litter-Robot EVO for one or two average size cats in a small space.
- Cat weight
- 3.3 to 20 lb
- Max cats
- Up to 4
- Litter
- Clay preferred
- Waste drawer
- 10 L sealed bin
A tidy, appliance like box that does well on odor and litter tracking, with magnetic parts that make routine cleaning quick. The 8.7 inch entry is tight, so it is really for small to medium cats; a Cats.com tester's cats never used it.
Full PetSnowy SNOW+ review →- Cat weight
- 3 to 19 lb
- Max cats
- Up to 2 cats
- Litter
- Clay based clumping
- Waste drawer
- Sealed
The EVO is the cheapest way into a Litter-Robot and fits smaller rooms than the Litter-Robot 4 or 5. It is rated for only two cats up to 19 lb, so big cats and busy multi cat homes should look at the larger models. It needs a flat, hard floor to avoid position errors.
Full Whisker Litter-Robot EVO review →Side by side
| PetSnowy SNOW+ | Whisker Litter-Robot EVO | |
|---|---|---|
| Price | $529 | $599 |
| 3 year cost | $529 | $599 |
| Our score | 7.7/10 | Not scored yet |
| Rank in Litter box | #4 | #15 |
| Status | on sale | on sale |
| Warranty | Up to 4 years per PetSnowy; 30 day free trial | 1 year, 3 years with WhiskerCare ($99); 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 19 lb |
| Max cats | Up to 4 recommended | Up to 2 cats (maker) |
| Waste drawer | 10 L auto sealing bin, up to 14 days for one cat (maker claim) | Sealed, carbon filtered drawer, up to 7 days for one cat (maker) |
| Sensors | Radar and weight sensors, anti pinch mechanism | Weight sensors and SafeCat anti obstruction system; no entry motion sensors (Vetstreet) |
| App | PetSnowy app with usage tracking and adjustable cleaning time | Whisker app (iOS and Android), 2.4 GHz WiFi only; Whisker+ membership optional |
| Litter type | Clumping clay preferred; tofu, pine and crystal listed as working | Clay based clumping litter; crystal, plant, paper and pellet litters not recommended |
| Size | 29.5 x 20 x 25.6 in, 8.7 x 8.7 in entry, 32.19 lb | 20.6 x 24.3 in footprint, 27.6 in tall, 14.85 in entry, 21.5 lb empty |
| Noise | Peak 53 dB per Cats.com | Marketed as nearly silent (QuietSift); no dB figure given |
| Best for | limiting litter tracking | one or two average size cats in a small space |
| Skip if | your cat is large or hesitant | you have a cat over 19 lb or three or more cats |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
PetSnowy SNOW+
- Cats.com: Best Anti Tracking in the October 2026 roundup; cats were curious but did not use it, likely due to the tight entry. Source
- Cats.com (4.6/5): Easy app setup and quick magnetic cleaning; peak noise 53 dB; reviewer says it is more appropriate for smaller cats. Source
- TechnoMeow: Comparison with Litter-Robot 4 favored SNOW+ for odor control but rated the Litter-Robot 4 higher overall; app lacks Whisker style weight insights. Source
Whisker Litter-Robot EVO
- Vetstreet: A veterinarian used it for about two weeks in a multi cat home and praised odor control and automation, but said the Litter-Robot 5 Pro would have suited her household better. Source
- TechnoMEOW: Used for a couple of months with three or more cats; setup was quick, but a mat edge caused a position fault error and app disconnects were more frequent than on the Litter-Robot 4 until a firmware update. Source
Pros and cons
PetSnowy SNOW+
Pros
- Anti tracking walkway and sealed bin
- Magnetic assembly for quick cleaning
- Top fill makes adding litter easy
- Long warranty offered by PetSnowy
Cons
- Narrow 8.7 x 8.7 in entry
- Fragrance can be strong
- Deep cleaning the enclosed interior takes effort
- Only a 30 day trial
Whisker Litter-Robot EVO
Pros
- Lowest priced current Litter-Robot
- Arrives almost fully assembled
- Sealed, carbon filtered waste drawer
- Free app tracks visits and cat weights
Cons
- Rated for only 2 cats, 3 to 19 lb
- Clumping clay litter only
- No nightlight or entry motion sensor
- Mat edges can trigger position fault errors
Questions buyers ask
Which is better, the PetSnowy SNOW+ or the Whisker Litter-Robot EVO?
The PetSnowy SNOW+ has a published review score and ranks #4 in our self cleaning litter boxes ranking; the Whisker Litter-Robot EVO is not scored yet. Pick the PetSnowy SNOW+ for limiting litter tracking. Pick the Whisker Litter-Robot EVO for one or two average size cats in a small space.
Which is cheaper?
The PetSnowy SNOW+ at $529, versus $599 for the Whisker Litter-Robot EVO, checked Oct 26, 2026.
What is the difference between the SNOW+ and the Litter-Robot EVO?
Cat weight range: 3.3 to 20 lb (Cats.com); PetSnowy says 3.3 lb minimum for automatic mode on the SNOW+, 3 to 19 lb on the Litter-Robot EVO. Max cats: Up to 4 recommended on the SNOW+, Up to 2 cats (maker) on the Litter-Robot EVO. Waste drawer: 10 L auto sealing bin, up to 14 days for one cat (maker claim) on the SNOW+, Sealed, carbon filtered drawer, up to 7 days for one cat (maker) on the Litter-Robot EVO.
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All self cleaning litter boxes, ranked
See the ranking →Affiliate links. We may earn a commission. It never changes our score. Disclosure