WD40 and Whiteboards - It really works!

I have this rolling whiteboard/easel that I use for carpet time - I love it, but it's seen better days. Recently I began getting really frustrated because it started leaving gross black residue every time I tried to erase, making mini-lessons SUPER difficult. Turns out I'd stripped all the special wiping properties away when I used my {very, very favorite cleaning tool} Clorox Wipes on them. OH NO.

But, have no fear. Googling saved my whiteboards, and it can save yours too! Google/Pinterest told me that WD40 would revitalize my white boards. Most of the sources I found were slightly iffy Yahoo! Answers-type things, so I figured I'd weigh in as an actual, honest-to-gosh teacher ... it works. A little smelly, so do it one afternoon so it can air out a little, but it works like a charm. Hallelujah!