Spectracide HG-96391 Weed & Grass Killer w/ Extended Control ConcentrateSpectracide Weed & Grass Killer is a non selective herbicide that will kill any vegetation contacted and will prevent re growth for up to 3 months. It enters plants through the leaves and moves down to the roots. This will ensure that the entire plant is eliminated. It also provides a protective barrier that prevents weeds and grasses from emerging for up to three 3 months. Avoid direct spray or drift onto desirable plants, lawn grasses, shrubs, and