MW-SC09 Plus vs Litter-Robot 4
Cross-brand multi-cat rivals at a similar price
Whisker Litter-Robot 4
Buy now$699
Whisker lists the unit from $699; colour and bundle options raise the price.
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Where the published data differs
Every line below is computed from the two manufacturers’ own figures. Attributes neither brand publishes are omitted.
- MW-SC09 Plus lists at $639.99, $59.01 below Litter-Robot 4 at $699.
- Minimum cat weight: MW-SC09 Plus 3.3 lbs versus Litter-Robot 4 3 lbs (10% more). Published data favours Litter-Robot 4.
- Litter type required: MW-SC09 Plus — Clumping litter, particle length under 15 mm; Litter-Robot 4 — Clumping clay litter.
- Cleaning cycle trigger: MW-SC09 Plus — Automatic after the cat leaves, plus manual and timer modes; Litter-Robot 4 — SmartScale weight sensor starts a countdown after the cat exits (3 lb minimum to register).
- Odor control method: MW-SC09 Plus — Odour-proof cover plus ammonia-breaking deodorising gel; Litter-Robot 4 — Sealed waste drawer with carbon filter.
Full specification comparison
| Attribute | MW-SC09 Plus | Litter-Robot 4 |
|---|---|---|
| Multi-cat suitable | Yes | Yes |
| Minimum cat weight | 3.3 lbs | 3 lbs |
| Maximum cat weight | 30 lbs | Not published |
| Waste drawer capacity | 6.7 L | Not published |
| Litter type required | Clumping litter, particle length under 15 mm | Clumping clay litter |
| Proprietary litter required | No | No |
| Proprietary waste bags required | No | No |
| Subscription required | No | No |
| Cleaning cycle trigger | Automatic after the cat leaves, plus manual and timer modes | SmartScale weight sensor starts a countdown after the cat exits (3 lb minimum to register) |
| Adjustable cycle delay | Yes | Yes |
| App control | Yes | Yes |
| Weight sensing | Yes | Yes |
| Health monitoring | Yes | Yes |
| Odor control method | Odour-proof cover plus ammonia-breaking deodorising gel | Sealed waste drawer with carbon filter |
| Entry height | 8.27 in | Not published |
| Interior dimensions | 106 L interior space | Not published |
| Footprint | 20 x 21.5 x 20 in | Not published |
| Operating noise | 36 dB | Not published |
| Power source | Not published | AC power |
| Battery backup | Not published by either | Not published by either |
| Warranty | 12 months | 12 months |