I had to return the last starter pack I bought because the pod holder unfortunately didn't stick to the inside of the can lid. We have a slightly older trash can model, so the inner lid is metal rather than plastic, and I wondered if that might have been the problem. Regardless, the replacement starter pack I ordered seems to be working fine so far. It's been a few days and the holder is still sticking strong, which is already better than the last one. It definitely seems to keep odors in check as well (although my wife, who has a ridiculously sensitive sense of smell, had to get used to the slight scent from the pods).