okay so Im late jumping in here but I have some helpful information..

chronic ear infections are a good indicator of allergies. (being very itchy is also a typical symptom). my dad is a veterinary dermatologist & I work for him and and we deal with this all the time. if you can find a dermatologist in your area I highly recommend going to one to find out if allergies are the underlying problem. (look here http://www.acvd.org/public/findaderm/bystate.htm)

dogs with ear disease often require a vet to do an ear flush (they anesthetize the dog and use a machine to clean down to the ear drum). cleaning the ears with solutions at home and having your vet do ear flushes will never be enough if allergies are the cause, and if it isnt taken care of serious problems can develop.

poodles, labs & goldens are some of the most common breeds with allergy caused ear problems.