Cleaning Dirty Walls
The newest technology uses peroxide and detergents to penetrate soiled areas. Simply spray a product such as Bio-OX Citrus Concentrate on the soiled area, allow it to penetrate for a few minutes, then wipe clean. Repeat if necessary. Be sure to try the solution in a hidden area first, to test for colorfastness. You can sprinkle a little baking soda on your sponge to use with the Bio-OX for a more abrasive action. However, if the dirt has embedded itself into the paint, you may need to use a very fine grit sandpaper, which may or may not remove some of the paint.
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