Cleanse the creases with hydrogen peroxide. Also a good colloidal silver solution. That will eliminate the odor but that you have that problem indicates you need to do some work on your colon and liver.
You've seen Barefoots name on this site. He uses John Christophers herbal products and regimes. I highly recomend you get his Lower Bowel Balance (LLB) and Liver/gallbladder balance formulas and clean yourself out a bit. Also an antiparasite program - Barefoots "DeWormer".
If you're new in Natural Healing get my CD "The Natural Healing Paradigm" for a thorough understanding of it. It'll save you a lot of time and money to get your health back. Doc