Legacy Industrial's "HD40 Concrete StainGuard™" is the ultimate densifier, stainguard/sealer for your polished, terrazzo or smooth power-troweled concrete floor. Ultra small molecules allow maximum penetration and protection.There is no mixing with our product.This product is a green material and that means no harmful chemicals to worry about.Coverage: 400+ sq ft. per gallon. Apply using a pump-up sprayer and our easy to use micro-fiber pad/applicator. The user must burnish immediatley post application, using our burnishing pads, for an amazing looking sheen and excellent resistance to most garage chemicals. Use our micro-fiber mop/pads to best apply this product. Please check out this video to see the entire application process!