TACKLES TOUGH MOLD STAINS INSTANTLY: most powerful mold stain remover that utilizes special deep penetrating surfactants CONTRACTOR GRADE: Our extra strength stain removal solution is specifically created for professional use and is 5x stronger than other stain removal products on the makeREADY TO USE: Our ultra-strength formula is ready to use and instantly dissolves difficult mold and mildew stains without scrubbing or sanding to get the job done quickly and efficiently, saving you both time and money. FAST-ACTING FORMULA: Our easy-to-use liquid stain remover instantly targets deeply seated stains that linger in damp or dark places SAFE TO USE ON MULTIPLE SURFACES: Removes tough stains quickly from attics, crawlspaces, wood, and concrete floors, brick walls, plywood, drywall, decks, ceramic sinks, toilets and other areas where mold and mildew tend to growHOW TO USE: put the detergent on the stain, grout, ceramic sinks, toilets, etc. and wait for 5 to 10 minutes, scrub, and rinse.