To use this dog food, simply serve it according to your large breed dog's age, weight, and activity level. Usually, you can find the feeding guide on the package. Make sure your dog always has access to fresh water. When you first switch to this food, do it gradually over a week or so to avoid upsetting your dog's stomach. Store the dog food in a cool, dry place. Keep the bag tightly closed after each use to maintain freshness. If you have any concerns about your dog's health or diet, it's always a good idea to consult your veterinarian.