Use bleach. Add about two tablespoons (1 ounce) of bleach to a gallon of warm water. Soak your feet in this solution for 5 to 10 minutes a day for a week. If you find this soak to be drying to your skin, you may apply a little baby oil.[4] •Bleach your white socks in the laundry. If your shoes can withstand it, add the same solution to the insides of your shoes and soak them down. Wait 1/2 hour and then just rinse them out in the sink. Dry them thoroughly before wearing them again.