Athletes Feet
Baking soda is what you need to get rid of athletes feet. You can sprinkle it on, or make a paste by adding a small amount of water to the powder.
Athletes feet is a form of ring worm. This fungus thrives in damp conditions, so the best thing to do is to keep your feet dry. Don't use cornstarch on your feet. Fungus will eat it, and can also cause yeast infections.
You can even use antiperspirant directly on your feet to stop them from sweating so much.