Charlie has been shaking his head quite often lately even though I've been cleaning his ears whenever I get a chance(monthly), he absolutely hates the bottle too. Since he is due for his rabies shot, I took him to the vet today, perfect check up. So I guess I kept up with his ears cleaning. The vet said allergy can cause the itch too, benadryl helps. They sell those ears cleaning solution at the pet stores, squirt bottle kind. I squirt a few drops, and Charlie will do the rest which is shaking his head. The wax is suppose to wash out.