Speedzone, 20 OZ, Concentrate, Lawn Weed Killer, 4 Way Herbicide Blend,Offers rapid control of more than 90 listed weeds, including white clover, dandelions, ground ivy, spurge, goosegrass and nimblewill. Visible Results In 24 Hours, Reseed In 7 Days, Rainfast in as little as 3 hours. Labeled for use on Kentucky bluegrass, perennial ryegrass, tall fescue, Bermudagrass, zoysiagrass, and others as listed