Keep your island paradise free from unsightly rust stains with the Do it Best 40LB Red Softener Salt. This water softener salt is your key to preventing iron deposit build-up and those pesky iron and rust discolorations on sinks, dishes, and even your favorite beach towels. Designed with rust-fighting additives, this salt eliminates the need for frequent brine tank clean-outs, giving you more time to soak up the sun. With 99.8% pure salt that's highly soluble, this product is a must-have for every Caribbean home.