Our Verdict
PETKIT Purobot Crystal Duo Wins

Supports cats up to 25 lbs with a 5.5L waste capacity. Choose Coziley G1 for detailed health monitoring and if your cat is under 18 lbs, accepting periodic sensor cleaning.
Bottom Line: PETKIT Purobot Crystal Duo is the better choice. Supports cats up to 25 lbs with a 5.
Key Differences
The most significant spec differences at a glance
Max Pet Weight Lbs
39% moreWeight
100% moreAdvantages
Where each product wins
PETKIT
- Max Pet Weight Lbs: 39% higher (25.0 vs 18.0)
Coziley
- Weight: 100% lower (24.0 vs 0)
Who Should Buy Which?
Find the right product for your needs
Buy PETKIT if...
PETKIT Open-Top & AI
This litter box is perfect for multi-cat households or owners with larger felines, accommodating pets up to 25 lbs. If you're budget-conscious at $199.99 but still want smart features like AI camera monitoring for urinary health and WiFi app control with no subscription fees, the PETKIT is an excellent choice. It offers reliable auto-cleaning and low noise, ideal for pet parents seeking convenience and health insights without breaking the bank or sacrificing quiet living.
Buy Coziley if...
Self Cleaning Litter Box
The Coziley G1 is best for pet parents who prioritize advanced safety and thorough health monitoring, especially with its infrared and weight sensors that halt operations immediately. If you need superior odor control via a sealed waste bin and appreciate detailed insights into your cat's litter habits, this $269.99 unit is a strong contender. Ideal for cats up to 18 lbs, provided you're prepared for occasional sensor and roller cleaning to maintain optimal function.
Spec Comparison
9 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $200 | $270 |
| Rating | 4.5(165) | 4.0(272) |
| Sensor Type | OmniSense | infrared, weight |
| Max Pet Weight | 25 lbs | 18 lbs |
| Waste Capacity | 5.5L | — |
| App Subscription | Free | — |
| Weight | 24 lbs | 0 lbs |
| Model Number | Purobot Crystal Duo | G1 |
| WiFi | Yes | Yes |
| Dimensions | 22" × 30" × 27" | — |
| Cleaning Cycle | 7 min | — |
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Pros & Cons
Quick overview of strengths and weaknesses
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
Coziley Self Cleaning
- Sensors detect cat, halts operation immediately
- Sealed waste bin contains odors effectively
- App allows remote control and notifications
- Monitors cat's litter habits for health insights
- Requires regular sensor cleaning for optimal function
- Rollers need periodic cleaning to prevent debris
- Not suitable for cats over 18 lbs
Frequently Asked Questions
Common questions about this comparison
Which litter box is better for larger cats?
The PETKIT Purobot Crystal Duo is better for larger cats, accommodating pets up to 25 lbs. The Coziley G1 is designed for cats weighing up to 18 lbs, making PETKIT more suitable for heavier felines.
What is the main difference in waste capacity?
The PETKIT Purobot Crystal Duo has a specified waste drawer capacity of 5.5 liters. The Coziley G1 states it has a "large waste bin" that reduces emptying frequency, but a specific liter capacity is not provided.
How do their safety sensors compare?
PETKIT uses OmniSense sensors and an AI camera for safety and monitoring. Coziley features infrared and weight sensors that immediately halt operation upon cat detection, though these sensors require regular cleaning.
Which product offers more comprehensive health monitoring?
PETKIT offers a urinary health monitor and AI camera. Coziley provides health insights by monitoring your cat's litter habits via its smart app. Both offer valuable health tracking capabilities for your pet.
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