Rust-Oleum 293438 Rocksolid Efflorescence Remover gal
ROCKSOLID Efflorescence Remover is used to remove white, chalky residue (“efflorescence”) and mild rust stains found on concrete and masonry. Suitable for interior and exterior use. Brightens concrete and masonry surfaces, Safe near grass and plants, For use on bare concrete. * SHIPS GROUND ONLY. Provide valid street address at Checkout.