I have a big dog that has really bad doggy body odor. His coat gets dull and greasy feeling right after bathing and smells bad in just a day or two. He does not have fleas, hotspots or skin problems. You can wash him with flea shampoo, human shampoo, oatmeal shampoo and he will be stinky enough in a day people don't want to pet him. He's like Sienfield's car. If you pet him you need to shower right away. A friend said it might be bacterial and to add iodine to his next shampooing. I'm going to try bleaching the deck and sunroom where he hangs out. I did use a milder cleaner in the sun room where he hangs out. I'm thinking of dousing him with witch hazel. Any ideas??? We did bath him a lot this summer because it was so hot and I think that caused the problem, almost like is oil glands are in overdrive. Is there something I can feed him???