Product review (5 stars): The #1 tool for clearing ice from your fridge's water dispenser line
While not a permanent solution, it has improved the situation immensely.

I tried the blow dryer method. Took 10-15 mins and was fully effective. The blockage came back within a few hours of non-use. I tried the string trimmer line method and while it was a quick way to get rid of the blockage, it only took about an hour of non-use for the ice to return. The flaw with this trick is that the string takes up space in the tube which means there's less water to freeze so it happens more quickly.

The IceSurrender tool gets to the problem and because it removes all the ice, the line stays clear much longer with non-use. The first day, the line was clear up to the time we went to bed. It was frozen up in the morning so I used the tool again. The line was clear all day and did not freeze up over night.

I know I've got an ongoing problem that needs to be addressed, but this tool has reduced the time it takes to unblock the water line (it takes longer to microwave the water to put into the tool) and has kept the line clear longer than any of the other methods and that's because it's clearing out all the ice with the hot water. The other methods are unreliable when it comes to knowing you've cleared the line. This is the one method you can count on to clear the ice.