To use these cat treats, simply offer them to your cat as a snack. You can give a few treats at a time, but keep in mind the overall calorie intake for your cat, especially if they're on a strict diet for kidney care. There's no special storage needed; just keep the package sealed in a cool, dry place. When it comes to your cat's health, always monitor how they react to new treats. If your cat has any other health conditions or you're unsure about the treats, it's best to consult your vet. These treats are made with love in the USA, but like all pet products, check the expiration date on the package to ensure freshness.