Cleaning the lint trap/filter helps but the vent tube also can accumulate lint.
Dryer vent fires are a huge problem.
John's Duct Cleaning, serving, but not limited to Waukesha, Milwaukee, Jefferson and Washington counties will come out, inspect and clean that vent as needed.
While we are there John's Duct Cleaning can also do an inspection, with no obligation, of your homes ducts.
A clean dryer vent will also make your unit work more efficiently.
Contact us at www.johnsductcleaning.com. You can also "LIKE" or business Facebook page from there.