Method 7 for Cleaning Your Toothbrush: Go High Tech
If the above solutions sound too complicated, and you'd prefer to use a no muss no fuss method of cleaning your toothbrush, head to your local drug or discount store and pick up a UV toothbrush cleaner for about $20.
Method 8 for Cleaning Your Toothbrush: Replace It
No matter how much care you put into cleaning your toothbrush, most dentists recommend replacing your toothbrush every three or four months, or when it shows sign of excessive wear, such as bent bristles. It is also a good idea to replace your toothbrush after any type of illness.
Tips & Warnings
It's not necessary to do all of the above methods!
Pick a method that sounds like it will work for you and use it consistently. Or, experiment a bit with different methods to find which one you find the most helpful and then use that method consistently.
Be very careful when using bleach to clean your toothbrush!
Don't ever put your toothbrush in the lower rack of the dishwasher, or it may melt.