Product review (5 stars): Great Product, Would Definitely Recommend!
I purchased this after noticing quite a bit of lint build-up in the dryer duct while recently replacing our outdoor vent cover/damper. This kit is straightforward and does a good job cleaning out the dryer duct. The kit consists of a brush for 4-inch round duct and six 2-ft flexible rods that screw together. The brush basically pushes the lint through and out the other end of the duct... so, definitely make sure your duct is no more than 12 ft or buy some extra rods to extend the kit... otherwise, you will likely end up with a giant lint blockage somewhere midway though the duct. I used a cordless drill to spin the brush as it went through the duct, but it also moved freely when just pushing it through by hand. Being that the whole thing is screwed together, just make sure to only rotate the rods clockwise or the connections may unscrew and separate inside the duct. The rods are sturdy, but flexible, and easily went through two 90-degree bends in my duct. Also, for easier clean-up, you may want to put down a sheet of plastic or something underneath the outside end of the duct to catch all of the lint and debris that gets pushed out. The components of this kit all seem durable and I would expect them to last for many years. Additionally, I do not believe the product page lists the country of origin, but for anyone interested, this dryer duct cleaning kit is made in China.