Gordon's Pasture Pro Broadleaf Herbicide Concentrate 1 galGordon's Barrier Year Long Vegetation Killer Concentrate gallon. Concentrated formulation. Prevents new growth for up to one year. Use where no growth is desired such as fencerows, driveways and around buildings. Concentrated 2,4 D mixed amine herbicide formulation Use on pastures and lawns Eliminates 125+ species of tough listed broadleaf weeds and brush No waiting between treatment and grazing when used alone, once sprays have dried One gallon