SunnyDry Concrete Cleaner
Prepares concrete, masonry, brick, stone, stucco, and tile walls prior to painting by cleaning and etching the surface. It removes and neutralizes salt-like, powdery deposits (efflorescence), mortar stains, and oil residue from forms.
Just add water and stir. Safer than Muriatic Acid.
Available in 12oz and 30oz