This 2-step combo pack is the perfect solution to remove mold and mildew stains and sanitize the affected area. For the staining, use MMR Mold & Mildew Stain Remover. A professional-grade instant mold and mildew stain remover, formulated to quickly and effectively remove mold and mildew stains present on wood, concrete, drywall, cinder block, and other porous surfaces. MMR Mold & Mildew stain remover penetrates soiled areas instantly, leaving surfaces clean and free from stains. MMR eliminates the need to sand, scrub, or abrade surfaces (for stain removal). It's the fast and easy way to eradicate mold and mildew stains. Once the stain is removed, treat the area with Onslaught Disinfectant to clean and prevent recurrence. Onslaught Disinfectant is an EPA registered disinfectant ideally suited for mold remediation and water restoration projects. Onslaught's formulation also functions as a fungicide, virucide, bacteriocide, cleaner and sanitizer. Onslaught offers a broad spectrum of kill claims for nearly 140 pathogens. Take a tip from the pros and save time and money on mold and mildew clean up.