Season long weed control from one easy application. Provides 6-9 months of weed control. Within days after application and moisture (rain or sprinkling), the foliage and root system of weeds and grasses die. Can be applied by hand directly from the pail or with any spreader suitable for granular fertilizers. Use on gravel driveways, fence lines, sidewalks & walkways, patios, wood decks, out buildings & sheds.