How to remove the marks left by faded balloons on the wall?

If the wall is seriously dirty, you can also use gypsum or precipitated calcium powder to rub it on the cloth, or gently rub it with fine sandpaper to remove it. Squeeze some toothpaste on the wet cloth and erase the handwriting of pencil or colored crayon on the wall. Stains on paper and cloth wallpaper can't be washed off with water, but they can be wiped off. New oil stains on colored wallpaper can be removed with talcum powder, and absorbent paper can be put on talcum powder before ironing. Such as stains on plastic wallpaper, you can spray some cleaning agents and wipe them with a wringing cloth, which will look brand-new.