To use this Royal Canin Dental Care Adult Dry Cat Food, simply feed it to your cat as part of their daily diet. Make sure to provide fresh water at all times. There are no special feeding instructions, but you can adjust the amount according to your cat's age, weight, and activity level. As for storage, keep the food in a cool, dry place. Once opened, seal the bag tightly to maintain freshness. This food is a great way to support your cat's dental health, but remember, daily tooth - brushing is still recommended for the best oral care results. If your cat has any pre - existing health conditions, consult your vet before starting a new diet.