I love these canisters. I began buying them last summer, when dusty miller moths began infesting our kitchen. We had to throw out a ridiculous amount of food, and I was desperate for something to stop the insects. Not only have they kept the moths out of our cereal, cornmeal, etc., they also keep crackers and cookies fresh and delicious. AND they fit on the shelves very nicely--way better than bags of rice wrapped in rubber bands--and are easy to use and clean. Oh, did I mention that they are pretty? Too bad you can only give them five starts.