Spec-by-spec
Head to head
Contenders from Self-Cleaning Litter Boxes, every metric lined up. The winning value in each row is outlined.
Litter-Robot 4 Self-Cleaning Litter Box with App & Multi-Cat Support #1 in Self-Cleaning Litter Boxes 
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
#1
#3
Cleaning Effectiveness
Fully sifts waste, leaves litter clean
Rake-based, full sift cycles
Odor Control
Sealed drawer with carbon filter, excellent containment
Sealed drawer + N50 2.0 carbon filter
App & Safety Sensors
Full app with weight tracking and anti-pinch sensors
Full app tracking + 11 sensors, anti-pinch
Waste-Drawer Capacity
Large drawer, handles 2–3 cats well
76L interior, 7L waste bin, 15-day hold
Ease Of Maintenance
Straightforward liner and drawer emptying
Drawer empties easily; accessible design
Noise
Moderate audible hum during cycle
Moderate rake cycle noise
Value
Premium pricing for category-leading performance
$299.99 (23% off list); premium mid-range
Verdict
The gold-standard self-cleaning litter box for multi-cat homes
Best app-enabled automatic litter box for multi-cat homes
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