Rinsing twice a day isn’t just a great way to keep your breath fresh. It’s the key to getting your whole mouth clean. The truth is that brushing alone only reaches 25% of your mouth. The power of the swish fights bacteria in your whole mouth, – teeth and gums. But it should be used twice a day to reach its deep-clean effectiveness. After all, germs are in your mouth all day, every day, and one swish only protects you for 12 hours. For LISTERINE® rinse to reach its full powerful potential, use as directed and swish and rinse vigorously for 30 seconds twice daily.