Product review (4 stars): My dryer can breathe
This is a great product. I always remove and clean the dryer lint catcher after each use, but who knew just how much lint actually builds up inside the dryer??!!.  I haven't used the large vent attachement; however, I used the small one and it was able to reach deep into the dryer and was pleasantly suprised on how much excess lint I was able to get out. This product definitely put my mind at ease regarding dryer fires from lint build up.