Product review (5 stars): Amazing tool
I had a cheap version of this item from "as seen on TV" which was pretty much useless, but this one seemed to be nicely designed and used a power tool.  When I got it in the mail, I couldn't wait to hook it up and I was blown away by how well it worked and how easily it went into my dryer duct.  I was so excited I ran and got my wife so she could watch and she was impressed too.  Just follow the simple instructions and this will work like a charm for you.