# PetSnowy SNOW+ vs Whisker Litter-Robot EVO

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.

Prices checked Oct 26, 2026. HTML version: https://robotsforthat.com/vs/petsnowy-snow-plus-vs-whisker-litter-robot-evo/

## 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 |

## 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](https://cats.com/reviews/best-self-cleaning-litter-box)
- 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](https://cats.com/petsnowy-automatic-litter-box-review)
- 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](https://technomeow.com/petsnowy-snow-plus-vs-litter-robot-4/)

### 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](https://www.vetstreet.com/pet-product-reviews/litter-robot)
- 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](https://technomeow.com/litter-robot-evo-review/)

## 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.

Full reviews: [PetSnowy SNOW+](https://robotsforthat.com/robot/petsnowy-snow-plus/index.md), [Whisker Litter-Robot EVO](https://robotsforthat.com/robot/whisker-litter-robot-evo/index.md)