Stihl Varioclean is a cleaning solution which contains NO phosphates or organic solvents which is designed to remove oils, resin, sap, grass staines and other dirt and grease from garden machinery. This will include evrything from chainsaw chains and bars, circular saw blades and the housing of your machinery. Surfactants are completely biodegradable. For diecast magnesium and steel. To use apply the cleaner, wash of with water and use a cloth to rub dry. Always use PPE when using cleaning substances.