on the market. The simplest way is by using dental hygiene-i.e. brushing and flossing your teeth every day. Make sure you get a periodic dental exam for cavities, or an unsuspecting tooth that needs to be pulled/extracted. Another thing you can do is either drink fennel tea, or chew fennel seeds-extracting the essence from the seed and then spit it out. This will help purify your breath naturally. Fennel seeds have an additional benefit by helping digestion.