Colgate Plax Mouthwash Fresh Tea kills up to 99.9% of germs and used twice daily provides 24/7 bad breath control for long lasting freshness. Colgate Plax Mouthwash Fresh Tea provides a cooling sensation that lasts 10x longer than brushing alone. Use twice daily for a healthier, fresher mouth. This mouthwash forms a protective shield to help neutralise the effects of bacteria and plaque for up to 12 hours. Formula is clinically tested by dentists. Including mouthwash in your daily oral hygiene habit is widely recommended to improve oral health because it can be used quickly throughout the day. Generally, in addition to brushing and flossing, the American Dental Association (ADA) Mouth Healthy site cites many types of mouthwashes that can be used for cosmetic and therapeutic purposes, both prescription and over-the-counter.