PULVERIZE WEED & GRASS KILLER 32 OZ CONCENTRATE IS A FAST ACTING, NON SELECTIVE WEED & GRASS KILLER THAT USES AMMONIATED SOAP OF FATTY ACIDS TO CONTROL WEEDS, GRASS, ALGAE, AND MOSS. APPROVED FOR ORGANIC GARDENING, WILL NOT STAIN CONCRETE OR PAVEMENT. IT CAN BE USED IN CULTIVATED AREAS PRIOR TO PLANTING GRASS OR FLOWERS.