According to the manufactures video and reviews on amazon it looks pretty safe to use on electronics, check out the reviews on amazon and you will see people using this on computers and other electrical components. I think for that price it worth giving it a shot
https://youtu.be/-qTMK7SpfYkI've never used it, but it will probably work. Try it on one board and see if it cleans up and/or damages anything.
Thank you guys for your time and your answer. I have ordered it. I will inform you how it will go.