Here is a great way to clean your toothbrush - just put them in a 1/2 cup of baking soda mixed with 1/2 cup of water. Do this once a week and your toothbrush will be nice and clean. Be sure to rinse your toothbrush a lot though before you actually use it. This could save money on gettin ga new toothbrush every month also! The miracle of baking soda - you can just do so much with it!!