My dog, Buddy, has brown substance in his ear. LOTS OF IT! It itches and he is constantly scratching his ear. I took him to the vet and they washed out his ears and gave me this medicine. 3 drops in each ear everyday. When i try to put the medicine in his ear, he goes CRAZY and tries to bite me and fights back violently and when i hold him down(he squrims a lot), he pees everywhere! what should i do? i can keep going to the vet for this but its $120 at least. any advice would be great. Thanks in advance!!