http://top-3-products.info/bad-breath/ - READ the 10 Minute Bad Breath report NOW!!! Another reason that causes halitosis or bad breath is the build up of bacteria. It is very easy for bacteria to multiply very rapidly if we don't brush regularly or brush efficiently. It is a known fact that an electric toothbrush is the most efficient way to get our teeth cleaned at home. It is also very important that we brush our tongues.