Things You'll Need
Instructions
Stand in front of a mirror with your mouth open. It will help to have ample lighting.
Scrape the back of your tongue with a tongue scraper, which is also sometimes called a tongue debrider, because the back of the tongue is where the smell-causing bacteria live. It is a good idea to make this part of your teeth-brushing routine.
Rinse with anti-microbial mouthwash if the scraping does not get rid of the bad breath.
Keep your mouth clean by brushing and flossing twice a day.
Try eliminating other bad breath culprits, such as smoking and strong foods like garlic or curry, if sanitizing your mouth does not eliminate bad breath. If nothing else works, see a doctor, as there may be some underlying medical condition causing the bad breath.