The end of July, it was recommended that her ears be irrigated. A culture was run and they found that she had a yeast and bacterial infection. The past two days, the Vet. So far, I have not seen a change. Chronic ear infections are difficult to cure and may take treatment over a several week period of time.
Some infections require adjunct surgery to aid in the treatment.
Your current veterinarian seems to have the right approach to the problem and you should continue with the treatment. It is important to follow the treatment instructions since stopping the treatment early or missing treatments can result in prolonged recovery or development of resistant to the medical treatment. We have lost a cat in the past we think, from his traps, and recently we heard him attack one of our cats who is now limping around with a broken leg. So far we have been told that it is legal for him to do this. You should talk to your local Humane Society, Animal Protection and Control and law enforcement offices.