I was given a bounce dryer bar free by viewpoints to try and let me tell you, it took a matter of a few loads of laundry to tell you that it's not worth the money that (thank goodness) I didn't spend on it.  I stuck it on as the directions stated and after 2 loads I heard a loud sound in my dryer.  The bar had come unstuck  from the dryer wall.  It got hair in it and was a gross mess.  I tried to reattach it and it stayed for another several loads....maybe 5 and then I got irritated and threw it away.  Nice concept, bad product....