Listerine Cool Mint Mouthwash: 250 mlListerine Cool Mint Mouthwash: 250 ml About this item Brushing only covers 25% of your mouth, germs left behind may cause plaque and gum problems Listerine reaches all parts of your mouth and removes 99. 9% germs Unique formula with 4 Essential Oils deeply penetrates to remove the bacteria in the plaque biofilm Listerine helps reduce gum problems in 2 weeks For best results, rinse with undiluted 20ml twice a day for 30 seconds. Don't rinse mouth with