Product review (5 stars): I googled frozen water lines and figured I would need ...
I googled frozen water lines and figured I would need a new freezer door. This little tool works wonders! Instant results!  After thawing out the waterline, I added a layer of self-adhesive pipe wrap insulation to the inside of the freezer behind the water dispenser. It froze once or twice after that but the tool works immediately.  I added another layer of the adhesive insulation and it hasn't frozen since.  I keep this tool in the drawer by the fridge because it's only a matter of time with these lousy side by side freezers!!