The Minimo Bamboo brushes are an excellent alternative to regular toothbrushes. Not only is it eco-friendly, but the BPA free bristles are infused with activated charcoal that leave you with shiny white teeth. Why Bamboo? - Organically grown bamboo are 100% biodegradable, and make the toothbrush naturally anti-microbial. Activated Charcoal - Charcoal makes the toothbrushes anti-fungal, anti-viral and anti-bacterial. Easy Identification - The brushes are coded with minimal design to help differentiate each brush.