The first step is to clean the lint trap after every load of laundry. By doing this simple cleaning regularly, you will avoid 90% of dryer vent problems. You should perform extensive cleaning annually, or sooner if you suspect a problem. Unplug your dryer and pull it out from the wall, then disconnect the exhaust tube from the dryer and the wall, and clean it with a vacuum.
"This a very professional company that came the next day after being contacted late in the day prior. The two guys that came to the door that did the work were well dressed and very courteous. They cleaned my diver vent and it works perfectly. I have their literature and will be calling them when I m ready for duct cleaning. Nice equipment too! Thanks for the good work. Nice not to have scroungy guys showing up at the door. "