Product review (5 stars): Beat a leaf blower
Awesome job.  Dryer maintenance person used a leaf blower to clean out my vent about a month and a half ago.  I noticed the flap was starting to not open as much and bought the linteater.

I must have pulled out 6 to 10 handful size lint balls.  Now the vent flap is fully opened by the dryers blower.
I will be using this annually.  I need a few extra rods for next year.