Product review (5 stars): Try this first before calling a service repair man to look at your fridge!
Wow, this tool is great! Saved me a ton of money compared to calling a repair man over to my house and incurring service call fees, plus who knows what else they might have charged me.

In the YouTube instructional videos the guy says to heat up water in the microwave for 30 seconds in order to use the tool... I found after several attempts that microwaved water did not solve the issue. I boiled some water in an electric kettle and used the tool into my fridge's water dispenser line and it was flowing in no time!