BOSS blocks odors, stains, and stops bleed-through. BOSS is a problem solver product and not needed for every project. In two coats, BOSS tackles tough set-in stains including permanent marker, water stains, and much more. BOSS even masks smoke odors and nicotine smells. How To Use: Clean first with White Lightning and then apply BOSS. Allow to dry approximately one hour. Apply a second coat of BOSS and allow to dry for one hour before painting with Dixie Bellee Chalk Mineral Paint.