This concrete paver cleaner is specially formulated to dissolve efflorescence (whitish salt) and remove ground-in dirt (traffic marks, etc.) on pavers, slabs and retaining walls made of concrete. Containing no hydrochloric (muriatic) acid, it works deep without discoloring or damaging the surface. It brightens up the color, cleans evenly and enables Protectors and regular sealers to better penetrate the material. Techniseal’s adaptable Sprayer (sold separately) makes application easier and quicker.