Did you know that your feet and hands have more sweat glands than any other part of your body? Now think about how often you wash your shoes or gloves. What about your gym bag? While the sweat itself doesn't smell, shoes, socks, gloves, and bags can trap odor-causing bacteria and fungus, which thrive in dark, damp environments. Just like you wouldn’t wear any piece of clothing for days without washing it, your shoes, bags, gloves and other items in day-to-day contact with your hands and feet need similar care and attention. The UV Pro Sanitizers are guaranteed to sanitize and kill up to 99.99 % of odor-causing bacteria and fungus with no harsh chemicals.