Our Verdict
Cumrige Wins

It supports larger cats up to 33 lbs and has a 15L waste bin, tripling PETKIT's 5.5L for less frequent emptying. Choose PETKIT for advanced AI camera health monitoring, despite its lower 25lb max pet weight.
Spec Comparison
9 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $200 | $200 |
| Rating | 4.3(2.5k) | 4.5(165) |
| Sensor Type | — | OmniSense |
| Max Pet Weight | 33 lbs | 25 lbs |
| Waste Capacity | 15L | 5.5L |
| App Subscription | Free | Free |
| Weight | 30.4 lbs | 24 lbs |
| WiFi | Yes | Yes |
| Dimensions | 21.6" × 26.2" × 21.5" | 22" × 30" × 27" |
| Model Number | — | Purobot Crystal Duo |
| Cleaning Cycle | — | 7 min |
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Pros & Cons
Quick overview of strengths and weaknesses
Cumrige Self Cleaning
- Cat safety sensors pause cleaning cycles.
- 15-liter waste bin lasts up to 15 days.
- Remote control and health tracking via app.
- Deodorizing design controls odor and prevents leakage.
- Requires 2.4G WiFi for app functionality.
- Unit is heavy at 30.4 pounds.
- Large footprint: 21.6"W x 21.5"D.
PETKIT Open-Top &
- Auto-cleans after each use
- WiFi app monitoring
- Fits cats up to 25 lbs
- Low noise operation
- Large footprint
- High upfront cost
- Requires specific litter
Frequently Asked Questions
Common questions about this comparison
Which litter box is better for larger cats or less frequent maintenance?
The Cumrige supports cats up to 33 lbs and has a 15-liter waste drawer, designed for up to 15 days without emptying. The PETKIT supports up to 25 lbs and has a smaller 5.5-liter capacity, requiring more frequent maintenance.
What are the key differences in their safety and monitoring features?
The Cumrige features cat safety sensors and app-based health tracking. The PETKIT offers more advanced OmniSense and AI Camera with specific urinary health monitoring, alongside standard safety sensors for comprehensive pet supervision.
Do both devices require a subscription for app access?
No, both the Cumrige and PETKIT models offer their app control and monitoring features with no additional subscription cost. Both require WiFi connectivity for full smart functionality.
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