Product review (5 stars): Worked great. I had to use it from the exterior ...
Worked great. I had to use it from the exterior vent and the from the interior, due to a 90 degree angle in my vent.  Got alot of lint out even thought I clean the lint catcher in the dryer with every load. It even pulled a dead chipmunk out of the vent. eeehhh! Made me jump. I install a rodent cage on the exterior vent to prevent that from happening again this winter.