Product review (5 stars): Cleaning dryer vents can be fun when a tool does what it claims!
This product made cleaning the dryer vent easy and fun. The manual looks daunting, but only a few pages pertain and worth reading. We were amazed at how much lint was in our vents. If I knew how much lint we were about to remove, I would have taken more pictures. What we did:

1. Clean from the outside vent in toward dryer.
2. Disconnect dryer vent from dryer and cleaned: 1) vent toward the outside, and 2) inside of dryer.
3. Cleaned lint trap area.

Works extremely well and well worth the purchase.