Toothbrushes harbor a host of harmful bacteria that can re-infect your mouth when you brush. Dr.Tung's Snap-On Sanitizer is a revolutionary product that releases all-natural, anti-bacterial vapors to kill germs and safely sanitize your toothbrush between brushings. Granules in a uniquely designed compartment - treated with special essential oils - release disinfecting vapors to kill germs and effectively neutralize bacterial growth on your toothbrush. A clean, safe, hygienic toothbrush helps protect your mouth from infection.