The dryer vents need to be cleaned again, the schedule is every two years. Plus you must verify it has been done to your unit with a receipt. In the past we have contracted with Titan to clean our vents. Please reach out to Titan or any other dryer vent cleaning service, its do it yourself this time and send a receipt to Mary Jo.
Getting this done is extremely import as dryer vents are a leading cause of home fires.
Thanks