Protect your mouth from germs with Cool Mint Listerine Antiseptic Mouthwash. Accepted by the American Dental Association, this mouthwash is clinically shown to reduce 52 percent more plaque and 21 percent more gingivitis than brushing and flossing alone. Adding a 30-second rinse to your morning and evening routines is all it takes to get 24-hour protection against germs that cause bad breath, plaque, and gingivitis. Cool Mint Listerine Antiseptic Mouthwash leaves your mouth feeling intensely clean.