Product review (4 stars): Good product/Gets the job done/Helpful DVD
I bought one of these LintEaters from Amazon some years ago. Today I used it once again. It's effective at removing built up lint from the roughly 9 feet of metal venting hose between my dryer and the vent flap installed on an exterior wall. Their ShopVac attachment doesn't fit my very old ShopVac model; it's just slightly too large to fit into its outlet for the hose. I instead stuck the ShopVac's own nozzle into the interior end of the duct and left it running while I used a drill to work the spinning brush through from the other end. I caught most of the dust in a large scrap piece of 5 mil plastic spread below the exterior duct opening. I was doing this task alone, so I started with 2 joined rod sections to clean the first half of the duct length. Then when I added another to lengthen it, it wasn't difficult to guide the longer extension of rod farther into the ducting. LintEater works well and reduces the hazard of fire. It also gives me an opportunity to clean up under and behind the appliances, retape the interior duct joint, check for varmints, etc. The short video on the enclosed DVD gets you quickly oriented for the task. A new problem, since it's aged: the bristles in the soft brush attachment are breaking off like crazy. That brush is now useless.