Living in an old farm house, I try to keep all of my food out of paper boxes and in plastic tupperware containers. The Tupperware Modular Mates Storage System are perfect for keeping cereal, crackers, rice, etc. I like that these containers are clear so I can tell exactly what is in them without having to label the containers. Also, it's convenient that they come in many different shapes and sizes. They stack easily, which is important when dealing with limited cabinet space. These are really affordable, and I have purchased so many of them over the years that have held up really well. Normally, to wash these, I just put them on the top shelf of the dishwasher. I don't think a single tupperware container of mine has melted or cracked over the years. I even will store things like Christmas Cookies in the freezer in these tupperware containers. They definitely work to keep the cookies and other items from getting freezer burned.