KILZ White Latex Interior/Exterior Sealer Stain Blocking Primer, 5 Gallon is a fast-drying, water-based multi-surface primer that excellent adhesion and sealing properties with a very mild odor. This versatile primer-sealer-stain blocker effectively covers most light stains including water, rust, grease, ink, pencil, and felt marker, making it i for a variety of surfaces. It provides a mildew-resistant coating and hides previous colors well, ensuring a smooth and clean finish. Suitable for use on interior surfaces such as drywall, woodwork, plaster, paneling, wallpaper, as well as exterior materials including masonry, brick, architectural plastics, and non-ferrous metals, this primer is designed to deliver reliable performance and long-lasting protection.