Consider the humble dryer, squatting next to its washing machine sibling in your laundry room. You might be surprised to learn that dryers and washing machines are involved in one out of every 22 reported home structure fires in the U.S, according to the National Fire Prevention Agency. Yikes. And can you guess the leading cause of such fires? Failure to clean. As in, failing to clean the appliance and associated vents. Order dryer duct cleaning.