Don’t throw away old toothbrushes! Here are 4 ways to repurpose an old brush to extend its life: 1. CLEAN YOUR SHOES. In a small bowl mix together 1 tsp baking soda and 1 tbsp warm water. Mix and gently scrub away dirt and stains. 2. CLEAN YOUR KITCHEN. Toothbrushes are perfect for small and hard-to-reach areas in your kitchen like sinks, faucets, and drains. 3. REFRESH YOUR CUTTING BOARDS. Preserve your wooden cutting boards with a gentle oil rub. Generously apply food-safe mineral oil and use