Product review (5 stars): Works great.
Received yesterday and used it today.  Wow, a mountain of lint came out of the vent on this home built in 1986.  The pipe was so full that the dryer connection in the home had separated due to too much back pressure.  I was a little uneasy using this due to not knowing the integrity of the vent pipe in the wall.  Even at 24' it was easy to push in by hand except at two points where use of a drill helped get around corners or other transitions.  I used an a-frame ladder and found it was easiest to keep the ladder a foot or so off of the wall.  If the ladder is right up next to the wall, it's a bit harder to reach back when adding a new shaft section.