If you’re having difficulty keeping your breath fresh, consult your dentist. If it is caused by an underlying health condition, you may need to be referred to your primary care doctor. Typically, however, good oral hygiene can prevent halitosis. Removing food and debris by brushing and cleaning between your teeth just after eating is always important. You may also want to consider using a mouthwash, particularly one that kills bacteria. Brushing your tongue or using a tongue scraper can also help by reducing odor-causing bacteria that can build up on your tongue or cheeks. If needed, you may need to consider changes to your diet.