Our Verdict
PETKIT PuraMax 2 Wins

It offers a larger 7.0L waste capacity for longer hands-free use and advanced infrared/weight safety sensors. Choose BCHARYA for cats up to 25 lbs, as PETKIT supports up to 22 lbs.
Bottom Line: PETKIT PuraMax 2 is the better choice. It offers a larger 7.
Key Differences
The most significant spec differences at a glance
Max Pet Weight Lbs
12% lessWaste Drawer
27% moreWeight
8% lessAdvantages
Where each product wins
PETKIT
- Waste Drawer: 27% higher (7.0 vs 5.5)
- Weight: 8% lower (22.0 vs 24.0)
BCHARYA
- Max Pet Weight Lbs: 12% higher (22.0 vs 25.0)
Who Should Buy Which?
Find the right product for your needs
Buy PETKIT if...
PETKIT PuraMax 2 Automatic
A pet parent with one or multiple cats, keen on monitoring their feline's health and usage patterns. They appreciate the advanced infrared and weight sensors for safety and data, alongside the convenience of a 7.0L waste bin that offers up to 15 days of hands-free cleaning. The low 7.87-inch entry is ideal for older or mobility-challenged cats, and they prioritize features like urine leakage prevention, willing to invest slightly more for these detailed insights and enhanced safety.
Buy BCHARYA if...
Self Cleaning Cat Litter
A practical cat owner looking for an effective automatic litter box that can comfortably accommodate larger cats up to 25 lbs, at a more accessible price point of $239.99. They value the convenience of auto-cleaning and WiFi app monitoring without an extra subscription cost. While its waste capacity is slightly smaller at 5.5L, its quiet operation and suitability for multiple cats make it an attractive choice for those with spacious homes who prioritize size, value, and a higher product rating.
Spec Comparison
9 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $282 | $240 |
| Rating | 4.2(778) | 4.7(296) |
| Sensor Type | infrared, weight | OmniSense |
| Max Pet Weight | 22 lbs | 25 lbs |
| Waste Capacity | 7L | 5.5L |
| App Subscription | — | Free |
| Weight | 22 lbs | 24 lbs |
| WiFi | Yes | Yes |
| Dimensions | 21.18" × 21.73" × 24.4" | 22" × 30" × 27" |
| Model Number | — | WCT-01 |
| Cleaning Cycle | — | 7 min |
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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.
BCHARYA Self Cleaning
- 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 homes with heavier cats?
The BCHARYA litter box can accommodate cats up to 25 lbs. The PETKIT PuraMax 2 supports a maximum pet weight of 22 lbs. Choose BCHARYA for slightly heavier felines.
What is the primary difference in waste capacity between the two?
The PETKIT PuraMax 2 offers a larger 7.0L waste drawer, providing up to 15 days of hands-free use. The BCHARYA has a 5.5L waste capacity, requiring more frequent emptying.
How do the safety sensors differ in these models?
The PETKIT PuraMax 2 uses multiple infrared and weight sensors for enhanced cat safety during cleaning cycles. The BCHARYA features OmniSense sensors. Both prioritize pet protection.
Is there a subscription cost for the app control features?
The BCHARYA explicitly states no app subscription cost. For the PETKIT PuraMax 2, no subscription cost is mentioned in the cons or pros, indicating its app control and health tracking features are also free.
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