Product review (5 stars): but they have an adapter that makes it easy to go both ways through the vent for maximum ...
The dryer cleaner definitely works as promised. My vent was a little longer than the included poles, but they have an adapter that makes it easy to go both ways through the vent for maximum cleaning. my vent was a little over 15 feet, the poles seem to come out around 12 feet. Just make sure you follow the directions to prevent damage, or accidentally unscrewing the poles inside the vent. I didn't pull out bags of lint like some people do, but I don't think our vent was that bad. It is a lot easier if you have a vacuum with a blower option otherwise you'll have to use the dryer as a blower as you loosen the lint.