Product review (5 stars): This works great. Our line keeps freezing so I was using ...
This works great.  Our line keeps freezing so I was using this daily.
We came up with a solution to prevent the line from freezing in the first place.  Cut a small piece of emergency blanket (silver mylar) and on the inside of the freezer tape it around where the water line goes through which is the part that protrudes underneath the ice maker.  After applying that fix we have not had to re-thaw the line.  It provides just enough insulation to keep the freezing temps away from the water line.