Bacon grease on his food. If your dog has a sensitive stomach then do less more often instead of a bunch at one time. My dog loves bacon grease so i can even warm a tablespoon in little dish and put under 1/4 water. Oncebit starts to help you can ho to couple times a week to maintain. Also until it takes effect wash with sulfur tar shampoo. People are against this shampoo but it deodorizes heals prevents and also provides relief. Also, put about a teaspoon - tablespoon of any vinegar in his waterbowl. Adjust til he drinks it if at first he deems reluctant. This helps ph balance, and kills yeast fungals that are systematic and will thus increase immune system and natural defenses. It also helps keep flea free and mite free. Trust Me!!!! Please. I know this works.