Product review (5 stars): So easy and so effective
I purchased this after a few months of worsening dryer performance.  It turned out that the problem was impacted lint in the dryer vent.  The LintEater arrived on my doorstep this morning and I tore the box right open - sad to say, I was eagerly awaiting its arrival!  I looked at the instructions, watched the brief DVD then went to work.  It was incredibly easy to use - the only extra step I had to do was to duct tape my regular vacuum hose onto the vacuum adapter provided, which is for a shop vac.  I cleaned the dryer vent from the outside in with the vacuum sucking the lint from inside, then changed positions with my vacuum and went from the inside out.  I hooked my dryer back up and voila!  A heavy load of towels was dry in 1/3 to 1/2 the time that it was taking before.  This is an incredibly effective, affordable, and easy to use product.  I am so glad I bought it!