Product review (5 stars): EXCELLENT
I must admit I was skeptical about this brush getting around short elbows in my dryer ducting. It worked perfectly! I purchased the brush kit and the extension kit and cleaned out the ducting and was able to get around short radius elbows in the line that was 18' long. I did not use the vacuum method but turned the dryer on (air only) and fed the brush in. I never saw so much lint in my life! Looked inside the duct (that I could see) and it was lint free, like new! I hate to admit that the ducting had not been cleaned since being installed in 2002! Will now perform this maintenance on an annual basis. Really easy to do! This is a great product!