So you have successfully treated the wart on the bottom of your foot and it is now gone. Congratulations! Now how do you prevent it from returning? A wart on the bottom of the foot is actually caused by a virus. And that virus is everywhere! It just needs an opportunity to find a break in the skin and then it thrives. To prevent it from returning, try not to go barefoot, especially around a pool or locker room or on gym floors or mats. Change socks often or choose socks that wick moisture away from your feet, because warts like moisture. And if you find that a wart may be forming, then be sure to make an appointment and have it looked at by one of the doctors to start a treatment plan as soon as possible.