How do you get black marks off the walls that are made from running toy cars being ran down the walls?

Question

My boys have hotwheel cars that they have run up and down my grandparents biege painted walls and have created black marks all the way up the hall way and now I need to know how I can get them off without having to paint the walls again.

Answer 1

Try mr. clean magic eraser. it should do

Answer 2

WD-40, but again, test color fastness in an out of the way area, inside of a closet or something

Answer 3

Try using toothpaste (white - not blue or red). dab a little on a soft cloth and gently rub on the marks.

You may want to test the durability of the paint by doing a test patch in an inconspicous place, i.e. behind the couch. If that doesn't work, try using a baking soda paste in the same fashion.