Spec-by-spec
Head to head
Contenders from Self-Cleaning Litter Boxes, every metric lined up. The winning value in each row is outlined.
PETKIT PuraMax 2 Automatic Self-Cleaning Litter Box with App Control #3 in Self-Cleaning Litter Boxes 
Price
Check price on Amazon →
Check price on Amazon →
Rating
★★★★★
★★★★★
Category rank
#3
#35
Cleaning Effectiveness
Rake-based, full sift cycles
Dual-rake scoops clumps and scrapes residue
Odor Control
Sealed drawer + N50 2.0 carbon filter
Open-top design; carbon/sealing not detailed
App & Safety Sensors
Full app tracking + 11 sensors, anti-pinch
4-corner weight sensors; app with usage/weight tracking
Waste-Drawer Capacity
76L interior, 7L waste bin, 15-day hold
Marketed for 2–3+ cats; drawer size unspecified
Ease Of Maintenance
Drawer empties easily; accessible design
Disassembles and rinses; Teflon tray reduces sticking
Noise
Moderate rake cycle noise
Not published; open-top may amplify motor sound
Value
$299.99 (23% off list); premium mid-range
$198 mid-range; fewer reviews / brand equity than leaders
Verdict
Best app-enabled automatic litter box for multi-cat homes
Open-top alternative for multi-cat homes, limited track record
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