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 99.9percent of germs that cause bad breath, and plaque for a fresher and cleaner mouth than brushing alone. Brushing and flossing alone only reaches 25percent of your mouth, incorporating Listerine as your third step helps to kill germs in virtually 100percent 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.