Product review (5 stars): Great product!
Tired of having to run the dryer through three cycles to dry jeans or towels, and two cycles for anything else, I searched the internet to find a solution. Read the reviews on this product, the hints and suggestions, ordered it.  My fiance did the majority of the work, I was the assistant.  The house I own was 12 years old when I bought it a year ago, and I think the lint must have built up in the vent system since day one. Running a hand up the vent outlet from outside the house felt like touching a felt-lined duct. We had more than 20 feet of duct to clean out.

This product is amazing and works as advertised. We purchased the extension kit to give us the length we needed, and followed all instructions - plus, after reading the reviews, I insisted he tape over the reverse button on the drill just to avoid any "oops" in the middle of things. We could not believe the amount of lint that we removed. It just kept coming! My dryer now works like a breeze - one cycle and even a full load of jeans are dry.

Highly recommend!