Product review (5 stars): Great product - easy to use & you'll be done quicker than you can unbox it and set up.
Having the Gardus Sooteater Chimney cleaning system I pretty much knew what to expect with this and the product lived up to it's expectations: It literally takes you longer to get set up to clean your vent than it does to do the job... and still 1/2 hour later I was done including time spent getting set up. (And there is almost no set up involved, either!)

Make sure you have the drill spinning the correct direction - reverse it and it will unscrew the brush or rods while in the duct!

Comes with adapter to plug shop vac in to suck up lint as it's dislodged but that was too much of a pain. No need to move the dryer & washer to access that side of things and hook up a shop vac... solution? Turn the dryer on and let it blow lint out the same end I was working from (outside). Much easier & the vent is just as clean.