Question?? How often to you clean your mouthguard?? We all know mouthguards are an important piece of equipment for anyone playing contact sports, but not everyone may be aware of the potential risks dirty mouthguards have to athletes. Yeast, bacteria and even molds can be found on your mouthguard. Some may think running your mouthguard will be enough, but it simply is not. The American Dental Association suggests cleaning a mouth guard by brushing it with a toothbrush and …toothpaste regularly to remove any built up debris, then rinsing it with soapy water. Researchers have found that soaking mouth guards in antimicrobial solutions such as Listerine, can reduce the amount of foreign organisms, as well. Also be sure to always put your mouthguard in a case with ventilation so your mouthguard can dry and to help prevent the growth of bacteria.