Whisker

Litter-Robot EVO

Name: Whisker Litter-Robot EVO
Brand: Whisker

rotating globe, sifting

$400–600 80% documented 5/6 litter types stated

The short version

Whisker Litter-Robot EVO uses a rotating globe, sifting mechanism. The manufacturer states it takes clumping clay litter and excludes tofu, pine pellet and other pellet. It is stated for cats up to 19 lb by the manufacturer. 1 of the 6 questions buyers most often ask is not answered anywhere in the manufacturer's own material.

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Whisker Litter-Robot EVO — AI-assisted editorial representation, not a photograph — AI-assisted editorial representation, composed by PURRINDEX from documented product characteristics and official visual reference. Not manufacturer photography.

From documented evidence only

Who this appears to fit

Good fit if…

You use clumping clay litter — the manufacturer's manual states this is supported
Your heaviest cat is under 19 lb — the stated maximum according to the manufacturer
You want to try it before committing — the manufacturer documents a 90-day trial

Not a documented fit if…

You use tofu, pine pellet and other pellet litter — the manufacturer excludes or advises against it
Your cat is over 19 lb — the manufacturer states that as the maximum

Each line above is derived from a value the manufacturer published; the source is shown against that value in the evidence table below. PURRINDEX draws no conclusion from a field a manufacturer left blank.

What sets this one apart

Key documented differences

Crystal litter is supported only under stated conditions
Entry sits 10.75 in from the floor, which matters for kittens, senior or arthritic cats
Needs a 20.6 × 24.3 in floor area (501 sq in)
Some features are subscription-gated: Whisker+ gates recaps and 2-yr history
Uses brand-specific consumables (waste drawer liners, carbon filter)
App-connected: Whisker app; Whisker+ optional
Documented 12-month warranty

What the manufacturer states

Litter compatibility

Litter type	What the manufacturer states
Clumping clay	YesSupported
Tofu	NoNot supported
Mixed	—Manufacturer does not state
Crystal	Cond.Supported with conditions
Pine pellet	NoNot supported
Other pellet	NoNot supported

MANUAL: clumping litter, or beads and crystals small enough to pass through the screen; translucent/white litter may impact Drawer Full Indicator accuracy. 'DO NOT use litters that are strictly absorbent, non-clumping, loose-clumping, newspaper-based, or wood-based pellets.'

Manual https://files.bbystatic.com/MnuA71vCZ/ioi4LV5Nz56A==/d1c0cb19-6afb-4d25-8ae4-af9

Stated by the manufacturer

Important restrictions

Kittens: kittens of at least 3 lb can use it

Original PURRINDEX drawings

Dimensions & footprint

Drawn to scale by PURRINDEX from the published dimensions below. An original drawing, not a product likeness and not manufacturer artwork.

Factual list, not a score

Documented mechanisms

weight sensors
anti-obstruction
SafeCat System

These are the mechanisms the manufacturer documents. PURRINDEX does not rank or score safety, and the number of listed mechanisms is not a measure of anything. Manufacturer

Known unknowns

What the manufacturer does not state

The manufacturer does not publish a waste capacity

Absence of documentation is not evidence of a shortcoming in the product. It is a statement about what you can and cannot find out before buying.

Same decision

Compare with the closest alternatives

Chosen by documented similarity — price band, form factor and the litter types each manufacturer states. Never by what a merchant pays.

Product image: AI-assisted editorial representation, composed by PURRINDEX from documented product characteristics and official visual reference. Not manufacturer photography.

Whisker

Litter-Robot 5 Pro

$600+

You use clumping clay litter — the manufacturer's manual states this is supported
Your heaviest cat is under 30 lb — the stated maximum according to the manufacturer
Entry sits 15.1 in from the floor, which matters for kittens, senior or arthritic cats

You use tofu, pine pellet and other pellet litter — the manufacturer excludes or advises against it

90% documented

View product Compare

Product image: AI-assisted editorial representation, composed by PURRINDEX from documented product characteristics and official visual reference. Not manufacturer photography.

Whisker

Litter-Robot 5

$600+

You use clumping clay litter — the manufacturer's manual states this is supported
Your heaviest cat is under 30 lb — the stated maximum according to the manufacturer
Entry sits 15.1 in from the floor, which matters for kittens, senior or arthritic cats

You use tofu, pine pellet and other pellet litter — the manufacturer excludes or advises against it

83% documented

View product Compare

Casa Leo

Leo's Loo Too

$400–600

You use clumping clay litter — the manufacturer's manual states this is supported
Your heaviest cat is under 20 lb — the stated maximum according to the manufacturer
Documented 9.5 L waste capacity

You use tofu, mixed, crystal, pine pellet and other pellet litter — the manufacturer excludes or advises against it

30% documented

View product Compare

Compare these side by side

Commercial layer

Buying options

PURRINDEX chooses the product first. Where you buy it is resolved afterwards and never affects what this site recommends — how that is enforced.

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Every value carries its source

Full evidence

Manufacturer list price: $599.00

Physical

Exterior height: 27.6 in
Exterior width: 20.6 in
Exterior depth: 24.3 in
Unit weight: 21.02 lb
Clearance requirement: Manufacturer does not state

Entry & interior

Entry opening: 14.85 x 14.85
Entry height from floor: 10.75 in
Interior dimensions: inside globe 16.50 in high (depending on litter level) x 18.60 in x 15.50 in
Litter bed: 13.90 x 13.90 in

Stated cat limits

Minimum cat weight: 3 lb
Maximum cat weight: 19 lb
Stated maximum cats: 2
Kitten restriction: kittens of at least 3 lb can use it

Waste handling

Waste capacity: Manufacturer does not state
Stated waste interval: Manufacturer does not state
Waste drawer: 3.80 x 11.75 x 11.00 in
Cycle delay: 3-30 min after use

Automation & connectivity

Cleaning mechanism: rotating globe, sifting
Power: 15 V DC
Wi-Fi: 2.4 GHz
App: Whisker app; Whisker+ optional
Weight tracking: Yes
Cat identification: weight-based
Notifications: Manufacturer does not state
Camera field of view: Manufacturer does not state
Cycle interruption: Manufacturer does not state

Ownership

Proprietary consumables: waste drawer liners, carbon filter
Subscription-gated features: Whisker+ gates recaps and 2-yr history
Warranty: 12 months
Trial period: 90 days