Product review (5 stars): Very useful...
Just used it to clean my long length of dryer vent.  It did remove alot of stuff.... but be careful.  I used a drill and you have to go very slow...otherwise the rods will start bending and "flipping"  can be dangerous.  Otherwise, I will be sure to use it every year!  Not sure how else I would have gotten my large wet clump of lint out of the ducting. Dryer now dries the clothes!