Other Information: Store at controlled room temperature 68-77 degrees F (20-25 degrees C). Cold weather may cloud this product. Its antiseptic properties are not affected. Misc: With everfresh technology. No. 1 dentist recommended brand. Powerful dentist clean feeling up to 3X longer (vs. brushing alone). Advanced formula. Controls tartar build-up. Kills plaque & gingivitis germs, keeps breath fresh for hours. www.listerine.com.