Our Verdict
PETKIT PuraMax 2 Wins

It supports a higher max pet weight of 22.0 lbs (vs. 18.0 lbs for Coziley) and has a specified 7.0L waste capacity. Choose Coziley G1 if your cats are under 18 lbs and you prioritize a sealed waste bin for odor control, provided you are diligent with cleaning rollers.
Bottom Line: PETKIT PuraMax 2 is the better choice. It supports a higher max pet weight of 22.
Key Differences
The most significant spec differences at a glance
Max Pet Weight Lbs
22% moreWeight
100% moreAdvantages
Where each product wins
PETKIT
- Max Pet Weight Lbs: 22% higher (22.0 vs 18.0)
Coziley
- Weight: 100% lower (22.0 vs 0)
Who Should Buy Which?
Find the right product for your needs
Buy PETKIT if...
PETKIT PuraMax 2 Automatic
The PETKIT PuraMax 2 is ideal for multi-cat households or owners with larger felines, accommodating cats up to 22 lbs. It's an excellent choice for pet parents with older or mobility-limited cats due to its low 7.87-inch entry. If you prioritize maximum hands-free convenience with a 7L waste bin, advanced leakage prevention, detailed health tracking, and don't mind a slightly higher budget for enhanced features and peace of mind, PETKIT is your best choice.
Buy Coziley if...
Self Cleaning Litter Box
The Coziley Self Cleaning Litter Box G1 is perfectly suited for budget-conscious cat owners seeking reliable automatic cleaning without the premium price tag. It's best for households with average-sized cats, specifically those under 18 lbs, who don't require the higher weight capacity. If you prioritize effective odor containment, remote app control for basic litter habit monitoring, and are comfortable with periodic sensor and roller cleaning, this more affordable option provides excellent value for its core features.
Spec Comparison
7 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $282 | $270 |
| Rating | 4.2(778) | 4.0(272) |
| Sensor Type | infrared, weight | infrared, weight |
| Max Pet Weight | 22 lbs | 18 lbs |
| Waste Capacity | 7L | — |
| Weight | 22 lbs | 0 lbs |
| WiFi | Yes | Yes |
| Dimensions | 21.18" × 21.73" × 24.4" | — |
| Model Number | — | G1 |
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Pros & Cons
Quick overview of strengths and weaknesses
PETKIT PuraMax 2
- Prevents urine leakage with sealed base and pad design.
- Tracks individual cat health data, weight, and usage via app
- 7L waste bin provides up to 15 days of hands-free use.
- Multiple sensors ensure cat safety during cleaning cycles.
- Requires placement on flat, hard floor to ensure sensor func
- Not suitable for young pets under 6 months or 3.3 lbs.
- Only compatible with 2.4GHz WiFi networks for app control.
- Not compatible with K3 Smart Spray odor remover.
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 PuraMax 2 is better for larger cats, accommodating pets up to 22.0 lbs. The Coziley G1 is only suitable for cats weighing up to 18.0 lbs, making PETKIT the stronger choice for heavier felines.
What is the main difference in waste drawer capacity?
The PETKIT PuraMax 2 specifies a 7.0-liter waste drawer capacity, offering up to 15 days of hands-free use. The Coziley G1 mentions a "Large waste bin" but does not provide a specific capacity in liters for comparison.
How do the safety features compare between the two products?
Both use infrared and weight sensors to ensure cat safety and halt operation. PETKIT highlights multiple sensors for safety and a low 7.87-inch entry benefiting older or mobility-limited cats, while Coziley also stops immediately upon detection.
Are there specific age or weight restrictions for pets using these litter boxes?
The PETKIT PuraMax 2 is not suitable for pets under 6 months or 3.3 lbs. It can handle cats up to 22.0 lbs. The Coziley G1 is not suitable for cats over 18.0 lbs, with no minimum age or weight restriction specified.
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