Product review (5 stars): Amazing results
I 2 of these to clean out the 12'  line that actually runs under my cement foundation.  It was amazing how much lint was in there (2 plastic grocery bags worth) as well as pen parts, beads, coins, and other junk.  The really amazing part is that my dryer dries clothes in almost 2/3 of the time.  This will pay for itself in a few months given how much less I will have to run my dryer.