Mold Armor Instant Mold and Mildew Stain Remover - Bleach-based formula. Cleans mold and mildew stains, disinfects odor-causing germs. Use indoors and outdoors on wood, plastic, fiberglass, concrete, brick, tile, grout, garbage cans, outdoor furniture and more. Great for paint prep - improves the long-term appearance and performance of your paint. Instant Mold and Mildew Stain Remover is your stronger alternative to leading everyday products. Ideal for use on: tile, grout, tubs, toilets, fiberglass, shower doors, vinyl curtains, counters, sinks, and more. 32-oz.