Product review (5 stars): Worth its weight in gold!
This is a product that simply blew me away. Our dryer vent was pretty badly clogged, and I'd tried just about everything to open it back up. Vacuum hoses, a plumber's snake, an air compressor, etc. No dice.  I was about ready to go down in my crawl space and completely disassemble the dryer vent, a chore that I was not relishing at all, but it was either that or bite the bullet and call in some pros. As a last resort, I did an Amazon search, and came across this product. For $27 I really didn't hold out a lot of hope for it, but it came in today and I gave it a shot. I could not be more impressed! The combination of the short brush, the vacuum attachment, and the flexible rods did the trick. By the way, from the picture you may think that the rods are relatively stiff fiberglass (like cheap tent poles). That is not the case at all. They are actually a VERY flexible nylon or some such, and snake their way into the dryer vent really well.  The people who assembled this kit knew what they were about.  A really awesome product.  If I had any "con" at all, and it's a ridiculously minor one, it's that I had to use a pipe wrench to disassemble the rods when I was finished, as they get really tight with all of the torque they have to endure.  That's about it.  Great job!  I'm going to make a note on my calendar to use this every 6 months or so.