Contractors' Solvent is a powerful, 100% organic all-purpose cleaner designed to tackle the toughest messes without harmful vapors or chlorinated solvents. This industrial-strength formula biodegrades in just 8 days and is safe for use on a wide range of surfaces including asphalt, silicon, concrete, and even skin and hair. Ideal for contractors and professionals, it removes roofing tar, grease, oil, adhesives, caulk, wet paint, and more—quickly and effectively.