How can you prevent such a tragedy from happening to your home and harming your family? Cleaning the lint out of your lint trap after each load of laundry is a good start, but it is not enough to keep lint from clogging the ducts. While this is an important practice for every day maintenance, it does not prevent lint from continuing to travel into the dryer vents. Lint gets dragged into the duct and will continue to collect, which in turn, blocks the air flow. The blocked air gets hotter and hotter in both the vent and the dryer, which then leads to a fire.