Product review (5 stars): It got the job done - dryer works faster - cheaper than paying for service tech
Glad I bought it.
1. Took about an hour of time
2. Easy to use
3. Cleared out a ton of lint
4. Cheaper than paying for a service to come out to clean the vent
5. Don't use a drill - it will save time, headache and allow you to get rods apart
6. Eliminated potential fire hazard

Moved into a 25 year old home and suspected that the dryer vent was partially clogged.  There was airflow but my dryer took about 20 mins longer to dry a load of jeans / towels than in prior house.  The vent is about 18 feet long so most products wouldn't work.  I assumed I would have to pay over $100 to get the vent cleaned by a service company.

From start to finish I spent about an hour of time.  This included moving the dryer out, cleaning the vent, removing back of dryer and cleaning all lint from it.  I used my shop vac to connect to the vent inside the house and blew air out the vent.  The connector provided worked excellently for this.

I learned the drill is not needed.  I have a standard drill that has worked for everything I've needed for 20 years.  The drill chuck would not work with the connector rods as instructed.  The rods fit in but the surface was too slippery for my chuck to effectively grab it.  I could get the rods spinning while outside the vent but when I put brush in the vent the rods just would spin in my chuck.  It would have been helpful if the kit came with a connector to put into a standard drill chuck.  Ultimately, I skipped the drill and used it by hand.  It worked perfectly without the drill.

The instructions warn that the rods may come apart while using the product and recommend using tape around connection.  I only hand tightened the rods but after using the drill the connections would not come apart despite efforts to use two large pliers.

I fully expect this is a product I can loan to family and friends.  That will save them money as well.

Only suggestion to improve the product is to put in instructions that the drill is optional and to include a small piece so rods fit better in a drill chuck.