Find the right automatic litter box
Compare manufacturer-documented specifications, maintenance needs and retailer options, with editorial input from Vlad’s product testing.
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Compare nine automatic litter boxes
Start with fit, cleaning method and daily maintenance, then check the manufacturer-documented features that matter in your home. Read the five-option buying guide
PETKIT PuraMax 2 with N50 Automatic Cat Litter Box
- Cleaning
- Rotating cylinder with interchangeable sifters
- Waste bin
- 7 L
PETKIT Purobot Crystal Duo Automatic Cat Litter Box
- Entrance
- 180 mm
- Litter
- PETKIT Crystal Litter Set only
PETKIT Purobot Crystal Duo Covered Self-Cleaning Cat Litter Box
- Cleaning
- Two-way rake
- Litter
- PETKIT Crystal Litter Set only
PETKIT Purobot Max 3 Automatic Cat Litter Box
- Litter
- Clumping clay, tofu, or mixed litter
- Entrance
- 204 mm
PETKIT Purobot Max Pro 2 Automatic Cat Litter Box
- Cleaning
- Rotating cylinder with replaceable sifters
- Entrance
- 255 mm
PETKIT Purobot Ultra Self-Cleaning Cat Litter Box
- Cleaning
- Rotating cylinder
- Entrance
- High entrance (over 250 mm)
PetSafe ScoopFree Clumping Self-Cleaning Litter Box
- Cleaning
- Detachable metal rake
- Litter
- Clumping litter recommended
PetSafe ScoopFree SmartSpin Self-Cleaning Litter Box
- Cleaning
- Rotating sifter
- Waste bin
- 6 L
Whisker Litter-Robot 4 Beginner Bundle – White
- Cleaning
- Automatic sifting system
- Litter
- Clumping or scoopable litter subject to manufacturer exclusions
Compare nine automatic litter boxes
Start with the condition that can rule a product out: cat weight, entrance size, available space, litter compatibility, cleaning design, Wi-Fi or camera use. Every value below comes from approved manufacturer evidence. “Not documented” identifies an evidence gap rather than a negative result.
| Product | Cleaning design | Supported cat weight | Entrance or opening | Compatible litter | Waste bin | Connection | Camera |
|---|---|---|---|---|---|---|---|
| PETKIT PuraMax 2 with N50 | Rotating cylinder | 1.5 to 10 kg | 200 mm entrance height | Clumping clay, tofu or mixed litter | 7 L | 2.4 GHz Wi-Fi | No |
| Whisker Litter-Robot 4 Beginner Bundle | Automatic sifting | 1.36 to 11.33 kg | 40 x 40 cm opening | Suitable clumping or scoopable litter | Not documented | Wi-Fi; band not documented | Not documented |
| PetSafe ScoopFree SmartSpin | Rotating sifter | Up to 11 kg; minimum not documented | Not documented | Clumping litter | 6 L | 2.4 GHz Wi-Fi | Not documented |
| PetSafe ScoopFree Clumping | Metal rake | Not documented | Not documented | Clumping litter | Not documented | Not documented | Not documented |
| PETKIT Purobot Crystal Duo | Not documented | Over 1.5 kg; maximum not documented | 180 mm entrance height | PETKIT Crystal Litter Set only | Not documented | 2.4 and 5 GHz Wi-Fi | Yes |
| PETKIT Purobot Max Pro 2 | Rotating cylinder | 1.5 to 10 kg | 255 mm entrance height | Clumping litter | 8 L | 2.4 and 5 GHz Wi-Fi | Yes |
| PETKIT Purobot Max 3 | Not documented | 1.5 to 10 kg | 204 mm entrance height | Clumping clay, tofu or mixed litter | 7 L | 2.4 GHz Wi-Fi | Not documented |
| PETKIT Purobot Ultra | Rotating cylinder | 3.3-22 lb (1.5-10 kg) | 10.43 in (265 mm) entrance height | Clumping clay, tofu or mixed litter | 10 L | 2.4 GHz / 5 GHz Wi-Fi | Yes |
| PETKIT Purobot Crystal Duo Covered | Two-way rake with dual waste traps | Minimum 3.3 lb (1.5 kg); maximum not documented | 12.40 x 8.38 in covered opening | PETKIT Crystal Litter Set only | Not documented | 2.4 GHz / 5 GHz Wi-Fi | Yes |
Check the selected product before ordering
Open the product page to review its limitations, full specifications and manufacturer source. Then confirm the exact product identity, package contents, current price, availability and retailer terms at Amazon UK.
A shortlist built around real constraints
Vlad has personally tested the nine products currently listed on this website. We compare published manufacturer specifications and clearly mark information that is not documented.
What we compare
Fit: Entrance height, footprint and manufacturer-stated cat-weight limits.
Daily care: Cleaning mechanism, waste-bin capacity and litter compatibility.
Home life: App controls, safety features and manufacturer-stated noise information.
Ready to narrow the shortlist?
Review the nine current models, then open the retailer listing only when a product fits your requirements.