After years of doing soldering and desoldering jobs using a variety of equipment and methods, I decided to give this stuff a try after seeing a YouTube video demonstrating a few possible uses. It's just fantastic! I was able to remove two USB ports from the donor board in less than a minute; with some SRA rosin flux (I didn't even wait for the sticky flux to arrive). What little solder was left was very easy to clean and remove from the through holes to install the new component. I will order more of this stuff!