Bamboo toothbrushes make a great eco-friendly alternative to single-use plastic brushes and contain natural antibacterial and antifungal properties meaning they are hygienic too. The bristles are made from nylon-4 which is designed to naturally biodegrade in just a matter of months. Soft enough for sensitive teeth but strong enough to remove plaque and tartar with minimal effort.
Swap your single-use plastic toothbrush for these premium bamboo toothbrushes from Plastic Phobia. Once the bristles have worn out it is recommended to remove them with a pair of pliers before disposal due to the different times the bristle and handles will take to biodegrade.
Alternatively, instead of composting the bamboo handle, it could be given a third life and be used as a seed marker or paint stirrer.