How do i get black spray paint off my white walls?

My 4 yr old got in the garage and found a can of black spray paint and paint herself,my white walls and white tile? I live in military housing and need to get it off??Any ideas?How do i get black spray paint off my white walls?
At this point you will have to put a good coat or 2 of Kilz paint and the tile try using a Mr Clean magic sponge they are great. Just keep a closer eye on the little bugger LOLHow do i get black spray paint off my white walls?
Kilz for the walls. Its a primer and will cover it. Yhe tile will need something like goof-off. Try a hardware store. And be sure to ventilate the garage! Then lock up the spray paint!!
paint them ALL white. lolz