The LISTERINE® COOL MINT® mouthwash is not only antimicrobial and a germ killer, but also a people pleaser. An oral antiseptic, it has been America's favorite for years. Just 30 seconds of rinsing, twice a day, is all it takes to reap the benefits of LISTERINE® COOL MINT® Antiseptic Mouthwash. You’ll get 24-hour protection with the following antiseptic mouthwash benefits: