Be sure to clean the lint catcher on your dryer every time you use it. For loads of clothes that have a lot of lint, stop and clean the filter in the middle of the drying cycle. You’ll save money, improve the efficiency of the machine, and eliminate a fire hazard.
Clean the exhaust vent system at least once a year. Be sure it is never clogged. Never vent a dryer inside the house. It should always be vented to the out-of-doors.
Never dry items that have been used with solvents or waxes or that carry a warning label saying they could catch fire.