Product review (5 stars): Seeing is believing!
This, along with the extra rod kit, did a wonderful job...but wait!  Wanna see the lint flow by?  Go to West Marine and purchase a clear plastic chart tube...it fits right over my Ridgid 2.5 inch vac tube leaving about 10 inches of clear tube sticking out and it fits right on the vacuum connection point of the dryer vent plug provided in the cleanout kit.  The 6 hp version 14 gallon Ridgid vac pulls the lint really fast but it's still visible in the clear tube.  I had wondered if once through the vent was going to be enough and when I retracted the brush I saw no lint in the clear tube as the drill was turning.  The cleanout kit works real well and seeing is believing!

Since writing the above I aquired a removal tool from Gardus and am truely impressed with the item.  Amazon would do well by listing it along with the other Gardus LintEater tools for us do-it-yourselfers who want to be prepared for the inevitable accidental drill reversal leaving some rods and the brush in the dryer vent.  Having the removal tool handy will be an asset.