Product review (5 stars): Dryer vent cleaner
Eventhough I cleaned 80% of my dryer vent with a homemade jig, I decided to give this set up a try.  All I can say is that I should have gotten this system in the first place and saved hours of work and scraped knuckles.  I started from the outside and slowly worked my way in.  Before I knew it, my son who was on the other end with the vacuum cleaner, told me the brush head was visible!  I was done in less than 10 minutes.  I highly recommend this product.  I got the extension kit to reach the entire duct from one side.