Ortho(R) GroundClear(R) Year Long Vegetation Killer is formulated to kill unwanted weeds, grasses, and plants to the root and prevent weeds and vegetation for up to 1 year. This fast-acting formula starts working immediately and is rainproof in 1 hour. Use Ortho(R) GroundClear(R) Year Long Vegetation Killer only where no vegetation is desired for at least a year. Use on driveways, sidewalks, fence lines, paver patios, walkways, gravel areas, rock and desert landscapes, under decks, parking areas, and along fences and curbs. Water the day before application if soil is dry. For best results, apply when temperatures are above 60degF. The reusable Comfort Wand(R) provides consistent spray for maximum accuracy. Do not use before planting lawns, fruits, vegetables, or other plants because the product remains active in the soil for up to one year. Do not enter or allow others to enter treated areas until sprays have dried. | Ortho Ready-to-Use GroundClear Year Long Vegetation Killer | Size 1 gal