Listerine Cool Mint Mild Taste mouthwash and it packs the power of Listerine in a mild taste. Listerine reaches your whole mouth to remove the germs left over after brushing and the leftover germs may cause bad breath, plaque and gum problems. Its a unique formula with 4 essential oils, which rinses deep to remove 99.9% of the germs and reduces the gum problems in just 2 weeks.