The Canada Fire Administration reports says that every year more than 1,900 home fires are started by clothes dryers, and the leading cause of these fires is a buildup of lint due to lack of simple maintenance on the part of the owner. Each load of laundry that passes through your washing machine and makes its way to your clothes dryer contains lint-mostly small particles of cloth and fiber that are loosened from clothing by the action of agitating water.If you think that the removable lint filter in your dryer catches all this, think again. The problem is that not all of the lint is caught by the removable lint filter, but the lint that passes beyond the filter and is trapped in crevices deep inside the lint filter trap and all along the dryer vent hose or duct as it makes its way to the outside vent opening.