Rust-Oleum Mold Killing Primer in a 5-gallon container is a powerful solution for preventing mold and mildew growth on surfaces. This flat primer is specially formulated to kill existing mold and prevent future growth, making it ideal for high-humidity areas. Suitable for use on drywall, wood, and masonry, it provides excellent adhesion for topcoats. The low-VOC formula ensures safety during application, while its quick-drying properties allow for efficient project completion. Perfect for both residential and commercial applications, this primer is essential for maintaining a healthy environment.