fights germs that cause plaque and gives a 3x deeper clean vs brushing alone.Brushing only reaches 25% of your mouth, and the germs left behind after brushing double every 1-2 hours. LISTERINE Zero fights germs that cause plaque and gives a 3x deeper clean vs brushing alone. Used twice daily, LISTERINE Zero provides 24-hour protection against plaque and lasting fresh breath confidence. LISTERINE Zero is clinically proven to: ? Help prevent & reduce plaque, a major cause of gum disease ? Help fight bacteria between teeth ? Freshen breath ? Alcohol-free