The main source of bad breath is from sources other than the mouth. Once the sources have been eliminated, the bad breath tends to go away. In the mouth, taking care of gum disease or areas between the teeth that cause food impaction can go a long way in taking care of a halitosis problem. Another source of bad breath can be from the tongue. The surface of the tongue is covered with very tiny papillae. There are a lot of nooks and crannies that bacteria can harbor in and thus impart an unpleasant odor. There are mechanical tongue scrapers available to clean the surface of the tongue. You can also brush the tongue with you normal toothbrush. If you do that right after brushing the teeth, a small amount of toothpaste will be present on the brush, helping with the cleaning process. Let’s say that all of the bases have been covered and bad breath is still present, then you can resort to mouthwashes. Mouthwashes come in two basic varieties, ones that mask the smell with strong aromatic compounds and those that are anti-bacterial. It is important to not overuse an anti-bacterial mouthwash, because that can upset the balance of the normal flora, and could cause an overgrowth of disease producing organics whose presence would be a whole lot worse than the bad breath that it was meant to correct.