This compost caddy does not fit my existing Simplehuman garbage/recycle bin (and I don’t like the design of the compatible one). So although I really wish this attached to the side of the bin like designed, I have mine on my countertop. The profile is still pretty nice and the lid is extremely easy to open & close. I have not noticed any odors so it must seal well, though it doesn’t have a locking mechanism. It’s easy to care for/clean and I appreciate the matching compostable bags for this bin.