Ready to use mildew stain remover is formulated with chlorine-stable detergents to remove mildew stains on contact in about 3 to 5 minutes without scrubbing. Guaranteed to work on bathroom tile, shower curtains, grout around tubs, bath mats, vinyl auto tops, vinyl boat seats, awnings, patio furniture, ceiling and walls before painting, and under eaves of houses. Colorless/chlorine/pH: 12.3/USDA: C2.