Product review (5 stars): Excellent Results!
We had a dryer fire caused by lint build up. Purchased this before hooking up the new dryer. Couldn't believe how much lint it got out of the duct/vent leading to the outside of our house! I bought extra pieces because our duct/vent to the outside was longer than what was included in the kit (I bought an extra 8 so it would reach all the way from the dryer to the outside of the house).  The lint was wet due to the condensation and the brush was still able to scrape it out.  We did hook up a leaf blower on the inside that was able to help blow out the wet lint.  Duct/vent now spotless.  Wish I would have known about this lint eater years ago...