Product review (5 stars): Life Saver?
I cannot endorse this product enough.  Yes, it is not a commercial grade product.  However, it is a well thought out design that gets the job done. I bought the 12' extension kit because my dryer is not on an outside wall so the duct goes up and over the garage.  It is longer than the 24' of rods I had so I needed to go from both directions.  No worries, this system has been engineered for that.  After 6 years in our new home I was amazed at what came out of the duct - and so will you be with your dryer duct.  I showed my neighbors, with the same model home, what I had found in my duct.  Coincidentally, one was having problems with drying their clothes and thought it was the dryer unit.  I said no, your duct is clogged.  They borrowed it and are using it now. My other neighbor is using it next.  The directions are well written and easily followed. Follow the directions exactly and you should not have any problems. I used the shop vac method and would not do it any other way.  I'm sure it is the most effective way. Life saver?  You be the judge.