I'm having the same problems with my bulldog, Stouffer. I've taken him to a couple different vets and tried a few different products, but i can't seem to get his ear infections to go away 100%. The first vet I took him to (very new vet, had never seen a bulldog before..) told me that he needed to have his ear canals removed and that his infections would never clear up otherwise. Needless to say, I left that appointment crying and desperate for other solutions. I am ordering the Zymox solution that several people have mentioned, and I really hope it helps my guy. I have been thinking of putting him on a raw diet, since I know food could be causing this too. He was on Science Diet for almost 3 years before the ear problems started..could it still be the food?