Product review (5 stars): Works like a charm, saves your sanity.
This thing rocks!  If you have a certain model fridge this will save your sanity.  Unfreezes the line in about 1 minute.  I tried everything before finding this.  I wish I had the two hours of my life back trying to figure out how to make our water dispenser not freeze.  Finally, I found this and just live with the fact that the line will freeze all the time but this gets it back running in a short time.