How much does the dog weigh? That will determine how big of a bag he will need. My aunt has an food allergy stricken dog and the food was outrageously priced. She talked with her vet about another method. The vet suggested that she make her own dog food and keep it in the fridge. It is made up of chicken and vegetables and other stuff. Maybe your vet will have an idea of an exact recipe or I am sure that you can find on on the internet somewhere. The cost is cheaper and the dog eats very healthy and loves the food. Just a thought.