Product review (5 stars): Worked like a charm
Works great. I used it and an extension kit with extra rods to to clean a 21 foot long vent with a two right angle turns and it did a fantastic job with the adapter that lets you put the rod through and attach a shop vac. Got a TON of lint out, about a 5 gallon bucket full. Inside of the vent was left shiny and clean. Good for safety especially with such a long vent and to my surprise the dryer actually works quite a bit better now. On the auto cycle I used to have to run it again if I was drying heavy things like jeans or blankets/comforters etc... to fully dry things. Now it does it in one cycle and take about 25% less time to go through the auto dry cycle.

I was just wanting to clean out a potential fire hazard but it really does make a big difference running through a dirty vent vs. a clean one. Might be due to the long length of my vent but very happy with this product.