I don't know if they actually work or not as far as keeping cheese any longer. I think it's more of a convenience spot to put smaller items. I use mine to store cheese, lunch meats, packages of butter, extra boxes of cream cheese. All the little types of things that I don't want stacked up or floating around the fridge. I also use it to throw packages of soy sauce, and dipping sauces we get when we eat out in the off chance we might use them for something else.