STONESAVER Concrete Cleaner & Surface Prep for Paving Stones and Concrete is formulated to remove efflorescence (white salt deposits), dirt and tire marks from your paving stone and any concrete surface. STONESAVER Concrete Cleaner & Surface Prepcontains no muriatic or hydrochloric acids which can damage concrete surfaces. The proper removal of dirt and efflorescence is imperative to ensure sealer to surface bonding and enhance the surface colour prior to sealer application. STONESAVER Concrete Cleaner & Surface Prep comes complete with the “E-Z SPRAYER” Water Hose Adapter, which automatically dilutes and disperses this highly concentrated cleaner at a ratio of 20 parts water to 1 part cleaner. This eliminates chemical mixing procedures and the need for costly professional equipment or the inconvenience of using heavy jug dispensers.