Whink Rust Stain Remover gets rid of those unsightly stains in your sink, bathtub and toilet. This is specially formulated for removing rust in pipes, septic systems, toilets, sinks and more. Water doesn't only stain your fixtures but, over time, can stain your laundry too. This stain remover is safe for colorfast fabrics and carpets. Formulated to remove rust stains without having to scrub the surfaceUse on any rust-stained toilets, sinks, fabrics or carpetWater-based formula is safe on pipes and septic systemsSafe for white sinks and white toilet bowls