Professional grade efflorescence and stain remover. Total Prep is formulated to dissolve efflorescence and remove surface stains such as ground in dirt, traffic marks, iron stains, etc. It can be used on, but not limited to, concrete/brick pavers, slabs, concrete retaining walls, and many other concrete surfaces. Total Prep is environmentally and user friendly. It contains no hydrochloric acid and works without discoloring or damaging the surface. Total Prep cleans and primes the surface evenly and enables sealers/protectors to penetrate and cover more efficiently.