Remove up to 99% of germs left after brushing with the Listerine Cool Mint Mouthwash. Used twice daily, this mouthwash provides 24-hour protection against plaque, gives lasting fresh breath confidence and kills 99.9% of bacteria in lab tests. Also, it has clinically proven ingredients to prevent and reduce plaque, a major cause of gum disease, freshens breath and germ kill provides sustained plaque reduction after a dental cleaning. Size: 500ml