Product review (1 stars): We had our house re-sided last fall and as part of the project an extension from the dryer vent was added (with a nice cover) so
We have a screened porch attached to the house. The dryer vent is within the porch area so we've always had to deal with the hot wet air and lint. We had our house re-sided last fall and as part of the project an extension from the dryer vent was added (with a nice cover) so that it now exits the porch solving our past problems. The dryer vent extension extends straight down the exterior house wall and then makes a 90 degree turn and runs along the porch floor about 9 feet and exits the porch via a vent cover with a cover flap to keep the critters and bugs out when not in use.

I needed a dryer duct brush to clean this new arrangement. It had to be flexible so I could clean the entire duct work from both ends. This product seemed like the perfect solution. I was very disappointed with the results.

I actually read the directions and heeded the warning if the brush was going to be used with a drill  to ensure that none of the sections that screw on to each other came apart due to use of a drill. The first, and only time I used it the last two sections of the brush with the brush head came off and was now somewhere in the dryer ductwork.

Now I was stuck with a duct brush in my dryer vent and had to figure out how to get it out. Using a long broom handle and a hook I screwed into the end of the handle I was able to grab it and pull it close enough to pull out.

I won't ever be using this dryer brush arrangement with a drill again, it will be by hand if I ever use it at all. I ended up buying another type of duct brush attached to 10 feet  of flexible twisted wire coated in plastic. I'll most likely use that in the future to clean the duct from both ends of the duct work.
So, if you're gonna buy this brush, beware before you think about using a drill. You might not be as lucky as I was to get the brush out.