Product review (5 stars): wow
Well, after reading the reviews I bought this, live in a house where dryer vent has most likely never been cleaned in 30 years. Air flow was working but weak. Waited two weeks dreading this job, but worked great! Easy to use, took 3 runs through the vents to clean, but could not believe how much crap came out! I'm sure this will pay for itself in a month or two. Air flow really strong now. Extremely well designed, engineered, and instructions very thorough. Used it to clean furnance and tankless water heater vent also. Best buy I have made in years! Was perfect length for my setup.