Wash your feet. It sounds obvious, but a quick rub with soapy water in the shower isn’t enough. The objective here is to get rid of any bacteria and dead skin cells that bacteria like to feed on. So when you wash your feet, exfoliate the entire surface of your foot with a washcloth, brush, or any other abrasive mechanism and use anti-bacterial soap. Don’t forget to scrub between your toes, either.
Dry your feet. When you dry your feet, dry them completely. Moisture, whether it’s water or sweat, is what creates a fertile breeding ground for bacteria, Take the time to dry your feet thoroughly and don’t neglect the space between your toes.
Use hand sanitizer. It may sound weird, but a good scented (or unscented) hand sanitizer can kill germs on your feet and inhibit bacterial growth.
Use deodorant. The same deodorant you apply under your arms could also be used for your feet. Just make sure to get a separate deodorant stick for each area.