No matter what motorcycle accessories you wear or use, they are all going to need to be cleaned at some point. Your helmet is one thing that will definitely need a cleaning, as it will get dirty on the outside from debris, rain, and even dead bugs hitting it as you ride. It will even get dirty onthe inside from sweat as well. Rick Young from Yahoo! Voices suggests giving the helmet a good soak for around 30 minutes in baking soda and warm water. He has more tips for cleaning your funkified bike helmet as well.