A couple months after the warranty, the sensor completely stopped working. 

I called nine stars and nothing, except that I could by another one. Who wants to by a $50+ trash can every year? If the product actually lasted I would say that it is great buy, but it doesn't, so it amounts to  just an overpriced metal canister. 

Nine stars, offer a better warranty for your products or make products that are better quality. Super dissappointed.

Pros: convenient if it lasts more than a year
Cons: stops working too soon