FO3024-SV Efflorescence Remover is an user and environmentally friendlier product as compared to hydrochloric acid. Unlike hydrochloric acid, it does not emit obnoxious fumes, and can be used comfortably in confined spaces. It’s a ready to use, heavy duty, odorless liquid that removes heavy build-ups as well as aged efflorescence from a wide variety of stone, concrete, and masonry surfaces. It will efficiently remove efflorescence from vertical and horizontal surfaces, and can be used effectively on exterior and interior surfaces.