My cat has been getting brown wax in his ears. I brought him into the vet and they said he could possibly be allergic to the food hes been eating. Well I treated his ears and they were all better for a while and even started him on some nasty flavorless food that he hated! I decided I would try his old food again to see if his ears would stay clean. Well no luck, it seems to be coming back! Any suggestions on a good food that might not cost a fortune? Or is there a certain meat that cats tend to have allergies to?

Thanks!!