Hi. So, in general, it is good practice to rinse your mouth to prevent build-up of bacteria or yeast. But sometimes, we don't have water and can't rinse, and that's okay periodically. Some people can get lucky and never have problems despite never rinsing. Can you carry a water bottle, a mouth rinse or a toothbrush with you so that you always have access to a way to care for your mouth? If not, don't panic -- just make an effort to rinse whenever you can. Hope that helps. -Melissa, team member