Sam constantly gets his ears wet and chews on pig ears and rawhide which form a "crust" of dirt and stuff on the inside of his ears. I have to soak them in warm water to get them clean every 3 or 4 days. Once they are clean they look red and irritated. Is there anything I can put on these raw-looking spots to ease the irritation? I stopped using soap about a week ago and just use warm water, but it does take a little scrubbing to get them clean but I don't know what else to do. Any suggestions appreciated. I don't want to put something on them that is poison because I know some of it will eventually end up in his mouth!