This may sound like it is off the wall but a friend of mine told me this quite afew years ago. He had terribly smelly feet and asked someone what to do for it and they said to soak his feet in a solution of water and formaldehyde. He said he tried it and it worked like a charm. Only ever had to do it a couple of times and never ever had smelly feet again. Don't where you would buy a bottle of formaldehyde but it is sure worth a try. Let us know if you do try this. Could be a break-through of sorts.