Zinsser Mold Killing Primer is a powerful, water-based coating designed to eliminate existing mold, mildew, odor-causing bacteria, and other fungal organisms on interior and exterior surfaces. This fungicidal protective primer not only kills surface mold but also helps prevent future growth when applied as directed. Ideal for walls, ceilings, wood, drywall, masonry, and metal, it provides a smooth white finish that’s ready for topcoating. Low odor and easy to apply, it’s the trusted solution for restoring clean, healthy-looking surfaces with long-lasting protection.