Squeaks AND Streaks

I've been a longtime fan of WD-40 for its ability to get rid of annoying squeaks. But I recently read in Real Simple that it also has magical powers that erase crayon marks. There were two kids in our house before us and while most of the marks were painted over, I have come across several doodlings on non-wall surfaces.

Well, I finally found the little straw-thingy that goes with the WD-40 and tried it out today.

Brilliance, people, pure brilliance.