How to remove stains that are black your fiberglass bath tub

How to remove stains that are black your fiberglass bath tub Jeanne Huber — The Washington Post Q. We discovered black stains when we t k up the rubber mat in my son’s fiberglass bathtub. Efforts to completely clean with mold and remover that is mildew Soft Scrub with bleach had no impact. The tub […]