Built-in scraper. Ultra soft bristles feel here. Fights bad breath. As seen on YouTube. 90% of bad breath comes from a dirty tongue clean yours. Ultra-soft, micro-pointed bristles reach deep into the uneven areas of your tongue removing bad breath bacteria your toothbrush can't touch. Toothbrush bristles are packed together in tight bunches to sweep the smooth surfaces of your teeth, not clean down into the crevices of your tongue where stinky gunk hides. Tongue bacteria - account for 80-90% of all cases of bad breath. Dental School of the University of Buffalo, NY. Press Release Mar 28, 2008. Don't be a litterbug!