Ortho WeedClear, 1.33 Gallon, Ready to Use North Lawn Weed Killer Refill. 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. 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. Active ingredients:2,4-D, dimethylamine salt 0.313%, Quinclorac 0.104%, Dicama, dimethylamine salt 0.029%