Blasts calcium. Dissolves lime. Zaps rust stains. 80% plant-based ingredients. Use on: Showerheads, tubs & sinks. Coffee pots & tea kettles. Chrome/stainless steel. Porcelain/ceramic tile. Vinyl siding. DIshwashers. Toilet bowls. Septic safe. Money Back Guarantee: CLR Stain Remover is guaranteed to perform to your complete satisfaction or return to place of purchase with receipt for a full refund of purchase price. Safer Choice: Meets US EPA Safer Product Standards. epa.gov/safechoice. clrbrands.com. More uses, tips & instructions at clrbrands.com. Women owned. This bottle is 25% post-consumer recycled plastic. Encourage your local government to establish a recycling program. USDA Certified Biobased Product: Product 80%. Made in the USA.