Home cooking is the ONLY way to go.
I make up 5 or 6 weeks supply and freeze. They also get scrambled eggs, boiled eggs, oatmeat, dried fruits, apples, all types of berries, yogurt cheese, goat cheese, plain non fat yogurt and i mix in some kind of berry. Carrots, steamed broccoli, fresh green beans steamed, (nothing from a can) natural peanut butter and I make their own bone treats. Then I buy the small beef femur bones for them to chew on.