Ortho WeedClear lawn weed killer ready-to-use kills all types of weeds (as listed) without harming your lawn (when used as directed). The formula is rainproof in 1 hr and is fast acting you’ll see results in just one application. It kills over 200 weeds down to the roots, including dandelion, chickweed, clover, crabgrass and foxtail. Easily apply to weeds using the attached battery powered comfort wand. For use on grasses, including bermudagrass, buffalograss, fescues, kentucky bluegrass, ryegrass and zoysiagrass. Use Ortho WeedClear lawn weed killer to kill weeds to the roots.