[h0ldem]

How did your vet determine that your dog's skin problems are caused by food allergies? Only a small percentage of skin problems are actually food-related. People like to assume that if it's not mange, it's automatically the food.

While I agree that Purina is an awful food to feed and you should feed some higher quality stuff, I think you also need to look at the environmental stuff your dog is around. It could be detergent on his bedding or the cleaner you use on floors, it could be something in the air, it could be anything really and automatically assuming that it's food-related doesn't really help anyone.

If you really want a better idea of your dog's allergens, pay for an allergy panel to be done. Otherwise you're just using trial and error to attempt to guess at what could be bothering your dog.