If you need a reliable self-cleaning litter box for multiple cats and prioritize explicit safety features, the Coziley G1 is an excellent choice. Ideal for owners whose cats are individually under 18 lbs, it offers infrared and weight sensors for immediate safety halts. You'll appreciate the comprehensive health monitoring via app and effective odor sealing, making daily maintenance minimal. Its slightly lower price point also makes it a good value for robust smart litter management.

The FEELNEEDY S20-A is perfect for cat owners who prioritize extended periods between waste bin emptying. With its 11L capacity, it can hold waste for up to 15 days, reducing chore frequency significantly. If you need flexibility in litter types (clumping, silica, tofu) and value robust odor control via an airtight system, this model is for you. It's also a strong contender if you have multiple cats, potentially including slightly larger ones, given its unspecified max weight.