Product review (5 stars): A really good indication that you need to clean duct is if ...
this tool was suggested by my brother, who is in the business. I couldn't believe how much lint was coming out of my dryer duct! piles and piles of lint came outside. Still need to do ducts from dryer downward. Dryer fires are no joke, and from I've seen, I was definitely headed towards one! A really good indication that you need to clean duct is if you are not able to dry your clothes on one cycle. Highly recommend this. Oh, because I used this with a power drill, it was super easy and more effective than doing a hand job!