Product review (5 stars): Helped us find an unknown issue
This product is easy to use and comes with easy-to-follow instructions. Without this product who knows how long it would have taken for us to find out our vent was diconnected in two different places in the walls. Once we took care of the disconnections we did find a huge clog in the pipe and it came out very easily with this tool. If you're a DIY person, this is a must have tool.