So boy #1, 15, has incredibly stinky feet. He's been running cross country, and the only shoes he's worn are xeroshoes sandals or running shoes. He goes barefoot pretty much all the time except for practice and meets. His feet STINK. Like rotten German potato salad. Vinegar-smelling, gag-inducing rottenness that will choke a maggot from across the room. He can scrub his feet with soap and the smell is still there - barely diminished. We've been hitting them with some athlete's foot spray for the last couple days, but it's not much better. He's got a little bit of peeling between his toes, which he had attributed to blisters from his toes rubbing on longer runs (this occurred while running 5-9 miles in the xeroshoes sandals). No other visible defects at all. Any ideas on de-funking his feet? Thanks.