My dog is driving me crazy. He is one of those dogs with floppy ears and he gets repeated ear infections every couple of months. In one ear he gets a bacteria infection and the other he gets a fungus infection. I am constantly running him to the vet every coupe of months for his ears and it usually runs me around $130. The vet says he has an allergy to preservatives. So, we changed his food to an all natural food with no preservatives and give him allergy pills. Well, it's not working. He is still getting ear infections. Does anyone have any ideas of natural ways or something you can buy in the store to treat ear infections in dogs?