The Orabrush Tongue Cleaner features ultra-soft, micro-pointed bristles that reach deep into the uneven crevices of your tongue to loosen and lift away stinky bacteria. These bristles are designed after a surgeon's scrub brush. The scraper then collects and removes the bacteria and residue generated from brushing, helping fight bad breath. Replace every 3-4 months. Clean & Care To clean, hold the head of the Orabrush under a stream of running water and store it in an area that will allow the bristles to air dry.