Toilets, bath, shower, sinks, carpet, colorfast fabric and more. Best on rust. Spray removes rust stains fast. Bathtubs. Showers. Sinks. Toilets. Indoor surfaces. Tile. Colorfast fabrics. Carpet & more. For helpful tips, money saving coupons and information on the family of Super Iron Out products visit www.superironout.com. Performance Guaranteed: If not satisfied with product performance mail register receipt along with UPC to Summit Brands for a full refund. 1-888-476-6688 Mon - Fri 9-4 EST. www.summitbrands.com.