HuffPost may receive a commission from some purchases made via links on this page. Every item is independently curated by the HuffPost Shopping team. Prices and availability are subject to change. Bad news: Your toothbrush is probably way germier than you know. Millions of bacteria can collect on the bristles, and those germs can live for up to a few weeks . Dental guidance suggests replacing your toothbrush every three months, but what can you do in the meantime to keep your toothbrush (and