I recently saw an article where a person said he cured his sweaty feet problem simply by using an over the counter antiperspirant.

He would first wash his sweaty feet, dry them, and then apply an unscented solid antiperspirant — the kind you can get at any drugstore for underarm perspiration. He applied the antiperspirant to his toes and the area between the toes.

According to the writer, he tried this foot odor treatment for 30 days and it seemed to cure his stinky feet problem.

Logically this seems to make sense since he was reducing the perspiration and hence lowering the amount of bacteria growth which in turn causes foot odor.