[header] How to clean an electric toothbrush [title] Create a mixture of bleach and water. [step] Once a month, give your toothbrush a deep clean using bleach and water. Mix one part bleach with 10 parts water in a small container, like a cup. 
Make sure the container is big enough that you can submerge your toothbrush's head completely. [substeps] Wear gloves when handling bleach.