This is something I have not used however the below was related to me…
A woman’s dog was deaf for 5 years. Vet wanted to remove eardrums but she refused the procedure. She did some research online and found the below remedy.
After use, dog’s hearing was completely restored and chronic ear infections have also gone away.
She used Zymox 1.0 Hydrocortisone ear drops $13.00 remedy worth trying.