Jack n` Jill`s Bio Toothbrush has a compostable and biodegradable Handle made from 100% corn starch (non-GMO!). The nylon bristles are rounded and very soft for superior cleaning. Disposal Instructions:1. Break off toothbrush head.2. Discard thoughtfully. Check with local recycling programs if suitable (Nylon is recyclable).3. Place the rest of the toothbrush into your compost. Typically takes 90 days to break down in a commercial compost. Ragardless of the way you dispose of this toothbrush you can be sure that these toothbrushes will not be land-fill for millions of years to come - unlike many toothbrushes in use today.