As soon as you notice a stain, gently remove any wet paint with a spoon or dull edge—don’t rub it in more deeply. Depending on the paint type (latex or oil), dab a little dishwashing liquid, rubbing ...

Gently lift excess oil with a paper towel or cloth, but no scrubbing; you don’t want to paint the room! Dish soap or liquid laundry detergent is your stain-fighting sidekick—dab it on, let it settle ...