Battling an itching, burning case of athlete's foot? Let's fight back with some natural inexpensive ways. What You Need: Vinegar and baking soda. What You Do: Soak your feet in equal parts vinegar (white or apple cider) and water for fifteen minutes twice a day. If the infection is severe and the skin is raw, the solution will sting. Dry your feet thoroughly after each soak. Place your shoes out in the sun to kill any fungus that's inside them.