Use on aluminum, steel, copper, brass, galvanized, ceramic, concrete, brick, plastic, cast iron, metal. Will neither harm paint, lettering or decals, nor etch metal or glass. Contact time not to exceed four hours on aluminum. An industrial strength super surfactant concentrate boosted with active microbial grease digesters. Light pleasant fragrance. pH: 8.5-9.5; May be diluted up to 1 oz per gallon (1:128).