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 
Price
Check price on Amazon →
Check price on Amazon →
Rating
★★★★★
★★★★★
Category rank
#1
#4
Cleaning Effectiveness
Fully sifts waste, leaves litter clean
Fully sifts clumps, leaves litter clean
Odor Control
Sealed drawer with carbon filter, excellent containment
Sealed drawer + carbon filters, minimal odor
App & Safety Sensors
Full app with weight tracking and anti-pinch sensors
Full app tracking + reliable anti-pinch sensors
Waste-Drawer Capacity
Large drawer, handles 2–3 cats well
Large drawer, ideal for 3+ cats
Ease Of Maintenance
Straightforward liner and drawer emptying
Straightforward liner emptying, easy setup
Noise
Moderate audible hum during cycle
Moderate hum during cycle, some cats startled
Value
Premium pricing for category-leading performance
Premium price for flagship performance
Verdict
The gold-standard self-cleaning litter box for multi-cat homes
The category-defining self-cleaning litter box
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