1 Shot Efflorescence Remover by Bare Ground removes unsightly efflorescence (those ugly white salt stains that leach from brick, concrete and all masonry surfaces), and keeps it from coming back. Nothing looks worse than a beautiful brick chimney, wall, or bluestone walkway with white salt stains all over it. Efflorescence is cause by salt leaching out from the concrete or masonry product. This is naturally occurring but it doesn't mean you have to live with it. 1 Shot Efflorescence Remover is a fast-acting, water-based cleaner, used to remove efflorescence from existing concrete and masonry surfaces. Efflorescence Remover attacks sodium chloride deposits to make them easier to remove, and keeps them from coming back. Protect your investment with 1 Shot Efflorescence Remover by Bare Ground. Efflorescence Remover cleans, protects and improves efficiency in one step Helps maintain higher levels of efficiency maximizing your investment Ammonia free, streak free, non smearing, quick drying 1 Shot Efflorescence Remover has no odor or VOC's (volatile organic compounds) Environment and user friendly 1 Shot Efflorescence Remover is sold in a 1 gal. jug consummable no warranty