On the bright side, flat painted white walls give you a spot cleaning option that won't work as well with any other finish or color: melamine sponges, which you may know as the Mr. Clean Magic Eraser.

BEHR Ultra Scuff Defense Stain-Blocking Paint and Primer in One – Flat Zinsser Interior Perma White – Eggshell Once these low-sheen paints have cured, you can clean your bathroom walls with ...