My chocolate Lab had ear infections since we adopted him five or six years ago. I had him to the vet every month or six weeks, at $90-100 a pop, and the stupid things just kept coming back. Heck, he even had a standing 'script at the drug store for ear drops! The vet was sure it was allergy related, but none of the "usual" suspects seemed to be it. We eliminated soy, wheat, beef, and more from his diet, one thing at a time, and still the ears would get infected. Finally, I was at a local pet (small, independent) pet store, picking up a some cat food, and the owner asked if I'd ever tried the Chicken Soup brand. I said no, and he explained that it was all natural, no chemical preservatives and stuff like that, and said people find it good for cats with allergies. So I asked if there was a dog food- yep, there is. Started Murphy on that, and his ears cleaned up beautifully. We have since started him on Blue Buffalo brand food, just because I think it is a bit better (but that could be just me!). I truly think it was all the chemical junk in the dog foods we'd been buying that were irritating him. I've not had him to the vet except for his yearly exam in at least 2 years. I do clean his ears regularly, just to keep them good.