Brillo Sno Bol 24 oz. Toilet Cleaner removes hard water stains, mineral deposits, lime scale, and tough rust in your toilet. Its thick blue liquid formula clings to the bowl, and its 9.5% hydrochloric acid delivers a deep clean. While regular toilet cleaners only remove bacteria, Sno Bol goes above and beyond, removing rust and hard water rings with its proprietary hydrochloric acid formula. That's why Brillo is one of the most trusted names in household cleaning.