Listerine Original Brushing only cleans 60% of the surfaces of your teeth leaving plaque bacteria in the hard to reach places such as between your teeth. That is why dentists & hygienists recommend additional oral hygiene aids such as floss & mouthwash. Used twice daily, Listerine Original is proven to kill up to 99.9% of bacteria in the mouth; reduce plaque by up to 56% more than brushing alone; provide 24hr fresh breath protection & maintain healthy gums. Ingredients The active ingredients are Eucalyptol, Menthol, Methyl Salicylate & Thymol. The other ingredients are water, alcohol, benzoic acid, poloxamer 407, sodium benzoate & caramel Directions Rinse full strength for 30 seconds with 20ml (2/3 fluid ounce or 4 teaspoonfuls) morning & night. Do not swallow.