The first thing that you will need to do to tackle mouth odor is visit your dentist at least once every six months. The regular cleanings and checkups will make sure that plaque does not build up in your mouth. It will also address other problems that can lead to mouth odor. You should watch what you eat. Things like coffee, alcohol, dense proteins, sugar, onion and garlic can cause mouth odor.
Breathe through your nose. Breathing through mouth can result in dry mouth that acts like the breeding ground of the bacteria that causes odor. You should brush twice daily and floss once a day. Use a fluoride mouth wash that has antiseptic ingredients and mint flavor.