EBOOST FitTip™ Friday: Got Athlete's Foot? Get Some Garlic! Reason: Garlic has properties to kill athlete’s foot. To feel its effects, crush or mince several garlic cloves and add them to a small bowl of olive oil. Let it sit for 3 days. Soak your feet in warm water, dry and then apply your garlic preparation twice a day until your athlete’s foot has disappeared. Voilà!