- Cat weight
- 3 to 19 lb
- Max cats
- Up to 2 cats
- Litter
- Clay based clumping
- Waste drawer
- Sealed
Whisker Litter-Robot EVO
Compact, lower priced Litter-Robot for one or two cats
Researched by Riley Hart · updated Oct 26, 2026
SCORED
We started tracking this price on Oct 26, 2026 and have not found a past sale price yet, so we cannot say if $599 is a good deal. Black Friday is Nov 27, 2026, 31 days away, when robots in this category usually get their biggest cuts. Get a price drop alert.
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.
Best for: one or two average size cats in a small space. Skip if: you have a cat over 19 lb or three or more cats.
Specs
- Cat weight range
- 3 to 19 lb
- Max cats
- Up to 2 cats (maker)
- Waste drawer
- Sealed, carbon filtered drawer, up to 7 days for one cat (maker)
- Sensors
- Weight sensors and SafeCat anti obstruction system; no entry motion sensors (Vetstreet)
- App
- Whisker app (iOS and Android), 2.4 GHz WiFi only; Whisker+ membership optional
- Litter type
- Clay based clumping litter; crystal, plant, paper and pellet litters not recommended
- Size
- 20.6 x 24.3 in footprint, 27.6 in tall, 14.85 in entry, 21.5 lb empty
- Noise
- Marketed as nearly silent (QuietSift); no dB figure given
3 year cost of ownership
- Robot
- $599
- Total
- $599
No sourced running costs yet. We add parts and subscriptions as we confirm them.
Status and safety
- US availability
- ● On sale
- Recalls
- ● No Whisker robot recall in the CPSC database as of Oct 26, 2026. Checked daily.
- FCC authorized
- Not checked
- Company
- ● Active
- Warranty
- ● 1 year, 3 years with WhiskerCare ($99); 90 day in home trial
Price history
Tracked dailyTracking started Oct 26, 2026 at $599.
Each day adds a point. Turn on a price alert to hear about drops.
Where to buy
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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
What independent reviewers found
- 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.
- Vetstreet
- 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.
- TechnoMEOW
Spec history
Checked dailySpec tracking starts with the next daily check.
Email me when Litter-Robot EVO gets cheaper
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Own one? Tell us how it holds up
We email owners 3 quick questions now and every 6 months, then show the results here.
Questions buyers ask
How is the EVO different from the Litter-Robot 4?
It is smaller and cheaper, but rated for two cats from 3 to 19 lb. Whisker's FAQ says litter level and waste level sensing are Litter-Robot 4 features.
Does the app need a subscription?
No. Cat ID by weight, daily visits and remote control are free. Whisker+ is an optional upgrade for extra history and insights.
Guides and rankings with the Whisker Litter-Robot EVO
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