Safely clean small areas of black mold from hard surfaces using protective gear, detergent, and proper ventilation.
Wear an N95 respirator, rubber gloves, and goggles. Open windows and run a fan pointed outward. Only tackle areas smaller than about 10 square feet yourself; call a professional for larger growth.
Mold returns without addressing the cause. Repair leaks, dry the area fully, and reduce humidity below 50 percent with a dehumidifier or exhaust fan before and after cleaning.
On non-porous surfaces like tile, glass, or metal, scrub with a stiff brush, warm water, and dish detergent. The EPA notes plain soap and water works; bleach is not required and never mix bleach with ammonia.
Wipe the surface dry and keep air moving until no moisture remains, since lingering dampness lets mold regrow within days.
Throw away mold-soaked drywall, ceiling tiles, carpet, or fabric that can't be fully cleaned. Bag them in sealed plastic before carrying them out to avoid spreading spores.