Take back your lawn from weeds with Ortho WeedClear Weed Killer for Lawns Concentrate. This lawn weed control product kills all listed weeds without harming your lawn (when used as directed). This weed killer concentrate for sprayers kills over 250 major broadleaf weeds down to the root, including dandelion, chickweed, clover, spurge, oxalis, and others as listed. The lawn care formula starts to kill weeds in hours, produces results with just 1 application, and is rainproof in 1 hour. Use this weed killer on listed lawn grasses, including St. Augustinegrass (not Floratam), Bermudagrass, Centipedegrass, Zoysiagrass, Buffalograss, and Bahiagrass, Kentucky Bluegrass, Ryegrass, Tall Fescue, and Fine Fescue. To use, mix with water per label directions and apply using a tank lawn sprayer or apply using the Ortho Dial N Spray hose-end applicator. Spray only until the surface of the lawn is wet. For best lawn maintenance results, apply to actively growing weeds in spring or fall when daytime temperatures are below 90°F. Do not allow people or pets to enter the treated area until sprays have dried. One 1 gal. container of Ortho WeedClear Weed Killer for Lawns Concentrate treats up to 64,000 sq. ft.