Oil Extractor is a powerful, alkaline-solvent based oil spot cleaner with an advanced biodegradable formula that dissolves, encapsulates, and removes petroleum and food based oil and grease particles from the substrate. Oil Extractor’s Clean Rinse Technology rinses away quickly with a high or low pressure washer. Oil Extractor’s biodegradable and environmentally friendly phosphate-free formula replaces several types of harsh acid cleaners. Ideal for concrete and clay pavers, concrete flat work and retaining walls. Can also be used on manufactured and natural stone, concrete block, and wet cast products. Works on both horizontal and vertical applications. Not for use on asphalt.