To use this Purina Pro Plan dry dog food, simply serve it in your dog's bowl according to its age, weight, and activity level. You can find the recommended feeding amounts on the package. Always make sure your dog has access to fresh water. When introducing this new food, gradually mix it with your dog's old food over a week to avoid digestive upset. Store the food in a cool, dry place and keep the bag tightly closed to maintain freshness. If your dog has any specific health concerns or allergies, consult your vet before starting this diet. Also, remember to regularly check the expiration date on the package to ensure the food is safe for your dog to eat.