A powerful stain blocking formula that blocks most severe stains including water, smoke, tannin, ink, pencil, felt marker, grease and also seals pet, food and smoke odors. Original may be top coated with latex or oil-based paint. Blocks heavy interior stains. Seals smoke, pet and food odors. Seals porous surfaces for uniform finish. Stains: water, smoke, tannin, pencil, felt marker, grease. Odors: pet, food and smoke. Use on: wood, drywall, plaster, paneling, wallpaper, masonry, brick, painted metal and properly prepared glossy surfaces.