Product review (5 stars): This really works !!  Took about 15 minutes to clear 20+ years of lint.
I kept getting airflow error messages on my 2 year old dryer and could not figure out how to fix the issue.  I used a garden blower in the air duct and then thought my problems were over, but the error messages kept going.  My husband saw this tool on-line and we purchased it hoping that I would have a working dryer again.  We received the package in short time and the instructions were easy to follow and the tool worked exactly like it should.  In about 15 minutes, we had cleaned out the air duct by entering it from the roof and pulling the lint through the opening with the shop vac.  The brush pushed the lint downward and then I removed the shop vac and pulled by hand the lint through the opening in the house.  The shop vac had so much lint that the hose got clogged.  We ended up with a pile of lint about 8x11 square and 4 inches high.  If I ever have another problem with the dryer I will know just what tool to use.  I am sure that in the 20+ years of the house, that no one ever thought to clean out the air duct and make sure it was free of lint.  It bothers me to think of all of the dry time that we used over the last 5 years of living in the house.  Right after using the tool and putting everything back together, I put in 8 wet beach towels from the washing machine and in the standard 35 minute cycle all towels were dry.  WOW!!!  I am so happy to have my dryer back in business.  Thanks for a great product!  Best money I could spend without buying a new dryer. :)