Product review (5 stars): Get the lint out.
Build a better lint remover and they will beat a path to Amazon reviews.

This is one of those things that is so simple, elegant, and effective that it makes laundry room maintenance easy.

Much the way a chimney sweep practices his craft, now you can excel at the art of duct cleaning.  For all the efficient lighting and appliances in the home, you could quickly negate their efficiencies by running a dryer two or three times longer than normal, because lint is impeding the flow of air.  I noticed my dryer was taking longer than normal and suspected the stuff.

This product comes with several brushes and an attachment for clogs, along with several vacuum attachments.  The brush is attached to the end of a rod which is powered by a customer supplied hand drill.  The brush turns in the duct and frees the lint which falls to the bottom where you can use a vacuum cleaner to collect the booty.  There are four rods total which can be attached in series to clean a duct run of up to twelve feet.

A couple things about the cleaning process; turn the drill at a low (one or two turns per second) speed while slowly advancing (a couple inches per second) the rod(s).  And always run the drill in the forward (right hand rotation) direction, even when you are pulling the rod(s) back.  The rods connect with a right hand thread, so reversing the drill may unscrew a rod many feet in your ductwork.  Just run the drill forward, at a slow speed, and feed the rods slowly and you will be richly rewarded with much lint.  I just used a regular vacuum with the plastic nozzle about six or seven times as the lint fell from the duct to the floor in a neat pile.  It was enough to completely fill a bag, so remember to toss the bag when you are done cleaning the vent.  I used a cordless drill and the entire process took just one battery to complete, and I used all four rods.

Once you're done, you can walk tall because you aren't wearing damp pants anymore, thanks to the Lint Eater.