Product review (5 stars): Works Quite Well
I'm very impressed. This thing cleaned out my dryer exhaust line better than anything I've ever tried. Tip: have a vacuum cleaner running while using it, so you can suck up the lint that it pulls out. Also, it's pretty much only good for a single 90 degree bend; if you have more than that, you'll have to go at it from both sides or take the line apart at one of the bends.