Product review (4 stars): Great if your vents are not angled.
Used this product. Very simple to use and came with great directions. Bought the extension kit<a data-hook="product-link-linked" class="a-link-normal" href="/Gardus-R3203612-LintEater-12-Foot-Extension-Kit/dp/B001652LO6/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Gardus R3203612 LintEater 12-Foot Extension Kit</a>&nbsp;because our vent was over 12 feet long. It first removed a bird's nest then a lot of lint! Had trouble where the vent became a 90 degree angle from ceiling to floor. The rods would not pass through. I am going to attempt again because the vent is now more clogged than before. It must have pushed lint into that angular spot and formed an almost complete blockage. If your vent is not complicated like mine it will be a piece of cake to use!