PETKIT

Purobot Max 3 (P9906)

Name: PETKIT Purobot Max 3 (P9906)
Brand: PETKIT

rotating drum, dual sifting screens

$400–600 57% documented 4/6 litter types stated

The short version

PETKIT Purobot Max 3 (P9906) uses a rotating drum, dual sifting screens mechanism. The manufacturer states it takes clumping clay, tofu and mixed litter and excludes crystal. It is stated for cats up to 22 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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PETKIT Purobot Max 3 (P9906) — 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, tofu and mixed litter — the manufacturer states this is supported
Your heaviest cat is under 22 lb — the stated maximum according to the manufacturer

Not a documented fit if…

You use crystal litter — the manufacturer excludes or advises against it
Your cat is over 22 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

Entry sits 8.03 in from the floor, which matters for kittens, senior or arthritic cats
Some features are subscription-gated: PETKIT Care+ optional
Uses brand-specific consumables (waste bags, standard + honeycomb sifters, N50 / N60 odor modules)
Documented 7 L waste capacity
App-connected: PETKIT app
Documented 24-month warranty

What the manufacturer states

Litter compatibility

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

'99% of clumping litters including clay, tofu, corn, bentonite'. Crystal only via a separate Crystal Duo model. No particle limit published for this model.

Manufacturer https://www.petkit.com/products/purobot-max-3-automatic-cat-litter-box

Stated by the manufacturer

Important restrictions

Kittens: kittens under 6 months strictly prohibited; cats under 1.5 kg strictly prohibited

Original PURRINDEX drawings

Dimensions & footprint

No exterior dimensions are published for this product, so PURRINDEX draws its documentation instead: each dot is a tracked field, filled where a value is stated.

Factual list, not a score

Documented mechanisms

12 sensors (movement + weight)
xSecure
anti-pinch structure

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 interior dimensions

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.

PETKIT

Purobot Max Pro 2

$400–600

You use clumping clay and mixed litter — the manufacturer's manual states this is supported
Your heaviest cat is under 22 lb — the stated maximum according to the manufacturer
Entry sits 10.03 in from the floor, which matters for kittens, senior or arthritic cats

You use pine pellet litter — the manufacturer excludes or advises against it

73% documented

View product Compare

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

PETKIT

Purobot Ultra (P9903)

$600+

You use clumping clay, tofu and mixed litter — the manufacturer's manual states this is supported
Your heaviest cat is under 22 lb — the stated maximum according to the manufacturer
Entry sits 10.43 in from the floor, which matters for kittens, senior or arthritic cats

70% documented

View product Compare

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

PETLIBRO

Luma

$400–600

You use clumping clay, tofu and mixed litter — the manufacturer states this is supported
Your heaviest cat is under 22 lb — the stated maximum according to the manufacturer
Your cat avoids enclosed boxes — this is an open-top design

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

Open top70% 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: $499.99

Physical

Exterior height: Withheld — sources conflict beyond tolerance
Exterior width: Withheld — sources conflict beyond tolerance
Exterior depth: Withheld — sources conflict beyond tolerance
Unit weight: 22.0 lb
Clearance requirement: Manufacturer does not state

Entry & interior

Entry opening: 10.51 x 10.74
Entry height from floor: 8.03 in
Interior dimensions: Manufacturer does not state
Litter bed: Manufacturer does not state

Stated cat limits

Minimum cat weight: 3.3 lb
Maximum cat weight: 22 lb
Stated maximum cats: Manufacturer does not state
Kitten restriction: kittens under 6 months strictly prohibited; cats under 1.5 kg strictly prohibited

Waste handling

Waste capacity: 7 L
Stated waste interval: Manufacturer does not state
Waste drawer: Manufacturer does not state
Cycle delay: Manufacturer does not state

Automation & connectivity

Cleaning mechanism: rotating drum, dual sifting screens
Power: 12 V / 2 A
Wi-Fi: 2.4 GHz
App: PETKIT app
Weight tracking: Yes
Cat identification: weight-based
Notifications: full bin, cat activity, 24 h inactivity
Camera field of view: Manufacturer does not state
Cycle interruption: Manufacturer does not state

Ownership

Proprietary consumables: waste bags, standard + honeycomb sifters, N50 / N60 odor modules
Subscription-gated features: PETKIT Care+ optional
Warranty: 24 months
Trial period: Manufacturer does not state