Super Concrete Rust Cleaner - Water Base

Use on concrete, walkways, water spots, dirt and rust. In some cases it helps to remove efflorescence from concrete, walls, grout and bricks. 1 gallon covers up to 200-360 sq. ft. Must use a neutralizer (CW300) and then wash it off. Efflorescence remover is completely biodegradable and contains no toxins. However, it is corrosive and should be handled with care. Highly recommended to test a small area first. Available in a 1gal pail & a 5gal pail.