Ortho WeedClear, 32 OZ, Concentrate, Lawn Weed Killer North, 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. The concentrated formula can be easily applied with an Ortho Dial N Spray or tank 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! Active ingredients:2,4-D, dimethylamine salt 6.423%, Quinclorac 02.13%, Dicama, dimethylamine salt 0.60%