Ortho® WeedClear™ Lawn Weed Killer Ready-to-Spray kills all types of weeds (as listed) without harming your lawn (when used as directed). The formula is rainproof in 1 hour 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. Application is easy: simply connect the garden hose to the attached sprayer. 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!