Using this cat food is a breeze. Simply open the single - serve pack and serve it to your cat. You don't need to worry about storing leftovers or dealing with mess. Just discard the empty pack after use. Remember to keep the food out of reach of children and other pets. As for storage, keep the unopened packs in a cool, dry place. If your cat doesn't finish the whole serving at once, you can refrigerate the remaining food for a short time, but make sure to warm it up slightly before serving again to enhance its aroma and taste.