Product review (5 stars): Great product works fantastic with no problems at all
I ordered this the other day and just got done cleaning my vent.  This thing works great.  Don't buy a cheaper one. I almost did but went for this due to the better comments. It's worth it, and it will last me for years.  I can't imagine using one you have to pull or turn by hand after using this. It works with a cordless drill perfectly fine. It was no problem at all to clean the brush afterwards either.  Just pull stuff off the brush. It takes 1 to 2 minutes tops.  I don't understand the complaints about cleaning this at all. Ignore those comments.
Tips:
1. DON'T FORGET to always make sure your drill is spinning clockwise, otherwise you may unscrew the extensions and/or brush and leave it in your vent.
2. Have a second person or at least work out a way on your own to use a shop vac to hold right at the vent as you start cleaning the vent and especially as you pull the rods and brush out.  It'll help keep things a lot cleaner. Also, because of the mess clean as much or all of the vent from the outside 1st.

If you need a dryer vent cleaner - don't look any further. Just buy this one.