Remove blue ink

I tried using hairspray, eye makeup remover, and toothpaste to remove blue ink from a ball point pen that my son had written on our white apartment walls. They made a little bit of progress, but over 50% of the ink was still there.

So I used "Spray N Wash's" Stain stick. After about 4 applications and wipe downs with paper towels, the whole stain is gone.