Product review (4 stars): Good Product
We have about a 20 foot vent for our dryer. It was very clogged and this product worked great. We did not have any extention and needed to work the vent from both ends. We did have to go into the vent with a shop vacuum after to get any remaining lint that was not pushed completely out.
Yes I would recommend this product and for the price it is probably one of the best on the market. Just read the instruction manual carefully. You don't want any parts getting stuck in your vent!