Just 30 seconds of rinsing, twice a day. That’s all it takes when you use LISTERINE ULTRACLEAN Cool Mint Antiseptic Mouthwash. You’ll get 24-hour protection against plaque and gingivitis germs. Listerine® CoolMint® Antiseptic kills the germs that cause bad breath, plaque and gingivitis. Use twice daily for healthier oral hygiene.