I love the actual bins; they are clearly well made and I would buy more handmade items from this company! However, I do not think the dog food storage container is a good purchase. The lid doesn't close properly when attached to the plastic hinges (and the lid comes off if you try to open it); there is a second opening to get the dog food, which is nice. You are better off finding your own or getting the trash can. I bough three of these and none of them work as I imagine they are supposed to.
We are so happy to hear the cabinet is working for you and you like it! The lidded container "lids" should snap into place for you and not be bothersome. However, using regular trash cans is always an option :-) You can just roll down the bag.