Get rid of listed weeds in your lawn. Ortho WeedClear Lawn Weed Killer Ready-to-Spray kills all listed weeds without harming your lawn (when used as directed). The hose weed spray kills over 200 major broadleaf weeds and grass weeds down to the root, including dandelion, chickweed, clover, crabgrass, creeping charlie, and foxtail. The formula is rainproof in 1 hour and is fast-acting; DIY homeowners will get results in just one application. Use this weed killer on lawn grasses, including bermudagrass, buffalograss, fescues, Kentucky bluegrass, ryegrass and zoysiagrass. To apply, attach your garden hose to the sprayer and turn the water on. Slide the switch to "ON" and spray evenly only until the surface of the lawn is wet. For best results, apply to young, actively growing weeds when daytime temperatures are between 45°F and 90°F. (Do not apply to Bermudagrass when temperatures are above 85°F). Do not apply to St. Augustinegrass, bahiagrass, bentgrass, carpetgrass, centipedegrass, dichondra, seashore paspalum, gardens, or ornamental plants. Do not allow people or pets to enter the treated area until sprays have dried. One 32 oz. container of Ortho WeedClear Lawn Weed Killer Ready-to-Spray treats up to 5,000 sq. ft. of lawn.