Bad breath is most often caused by bacteria on the back of the tongue. Removing bacteria is easy with the help of this practical tongue scraper. The result of this thorough cleaning is a fresher and healthier breath. Usage: Use every day. Stick out your tongue. With the raised part of the tongue scraper downwards against the tongue, place it as far back as possible and pull forward. Clean the side of the tongue by using the smooth side of the tongue scraper. Rinse the tongue scraper after every pass. When you are finished, rinse your mouth thoroughly with water. Read more about halitosis here.