Natural cure for bad breath is cleaning your tongue. We already learned the bacteria that produce that foul odor live in our mouth and there's little we can do to prevent that. What we can do is to remove the bacteria from our tongue where most of the bacteria live. You can do this by using either one of two methods; a toothbrush or a tongue scrapper. A tongue scrapper, sold in drug stores, works the best as it is thin and can reach far back in your mouth to the back of the tongue. You simply scrape the tongue with the scrapper and thusly remove the bacteria living there. Ask your dentist for the proper procedure.