Product review (5 stars): You can't go wrong with this
I bought this to clean out the dryer vent in my new condo as I was ready to bet that the previous owners didn't bother cleaning it in the 6 years they lived here. I don't own a shop vac, so I just turned on the dryer to blow out loosened lint. Went outside and used my drill to thread the rods in - one at a time. I was amazed at the amount of lint that came flying out with each additional rod! clumps and clumps and lots of dust. Warning, you'll get dirty if you use the dryer method unless you buy that lintcatcher bag. I didn't mind getting dirty. Although, I haven't done any empirical measurements, I'd bet that my dryer is more efficient. If nothing else, at least I feel better knowing that my dryer vent, which is supposed to be completely clear, is indeed clear and that I don't have to worry about fire risk. Just knowing this is worth the cost.