Product review (5 stars): Worth The Price
This is a versatile system for a modest price. There is a caveat - FOLLOW THE DIRECTIONS! This system has an excellent instruction manual which is a rarity these days. Between following the instruction manual and using plain old common sense you can clean out your dryer vents with no problem. For example, like many others my vent goes down through the floor, makes a 90 degree turn heading toward the outside and makes another 90 degree turn to get to the outside vent cover. I disconnected the section from my dryer and tried to slide the long brush down through the vent below the floor. There was some resistance so I did not try to force it. This brush does not have the smooth round surface on its tip that allows the brush to travel without some force that might cause breakage. The short brush does have a rounded plastic tip. So, I tried the short brush and it easily slid through the vent. There are numerous configurations which can be tried on each end of the vent to obtain satisfactory performance.

The point I am trying to make is that if you approach this task like a gorilla that chases after a banana you stand a good chance of having one of the rods snap. This will cause you to have a difficult time removing the broken parts and may even cause you to utter a profanity. Take your time, the rods are flexible but not unbreakable and with a reasonable amout of caution you can get excellent results. I had not cleaned the dryer vent for many years until I read about the potential danger of lint buildup. With a reasonable amount of care I was able to remove the dryer lint without incident.