TZone SE Broadleaf Herbicide for Tough Weeds is designed to provide broad-spectrum control of some toughest weeds on your turfgrasses. It contains a combination of active ingredients Triclopyr, Sulfentrazone, 2, 4-D and Dicamba acid which offers multiple modes of action in controlling hard-to-kill weeds. It guarantees excellent post-emergent control as well as cool-weather performance to ensure effective elimination of troublesome weeds such as black medic, ground ivy, wild violet, wild blackberry, oxalis, aster, bindweed, chickweed, catnip, dandelion, hawkweed, poison ivy, and more. It is also rainfast in as little as three hours after application. It is labeled for use in bluegrass - Kentucky and annual, tall fescue, red and fine leaf, annual and perennial ryegrass, bahiagrass, bermudagrass, and zoysiagrass.