It works well problem is I wasted an entire bottle due to bad instructions
It says pour 8-10 oz of the liquid down your drain.  I opted for 10.  Waited 4 hours and barely a change!  I found out that the p-trap holds 8 oz of fluid so when I poured 10 oz in only 2 oz made it past the p trap.  They should tell you to use at least 12 oz then at least 4 oz would make it to the clog.  I used half of my second bottle and it cleared the drain very well but it was just so expensive to do that.
Rating: 4 stars