MMR is a commercial-grade mold stain remover formulated to immediately remove mold stains from wood and other hard surfaces. MMR penetrates soiled areas almost instantly, leaving surfaces clean and free from mold stains. MMR eliminates the need to sand, scrub, abrade, media blast or encapsulate surfaces to get rid of mold stains. MMR’s blend of surfactants makes it preferable to bleach or hydrogen peroxide products. MMR is specifically designed for the porous nature of wood found in unconditioned areas like attics and crawl spaces.