Protect your mouth from germs and get fresh breath with Listerine Freshburst Zero Antibacterial Mouthwash for bad breath. The great-tasting Freshburst spearmint flavour of this mouthwash leaves your mouth feeling clean and fresh, and is made with zero-alcohol for a less intense taste. It kills 99.9% of germs that cause bad breath, and plaque for a fresher and cleaner mouth than brushing alone. Brushing and flossing alone only reaches 25% of your mouth, incorporating Listerine as your third step helps to kill germs in virtually 100% of the mouth to provide that long-lasting fresh breath. Achieve maximum results by rinsing with this refreshing oral rinse for 30 seconds twice a day, both morning and night, for up to 24-hour germ protection. Listerine Dynamite Against Germs.