Ortho 32 oz. Concentrate WeedClear™ Lawn Weed Killer. This fast-acting, rainproof formula kills over 200 weeds down to the roots, including dandelion, chickweed, clover, crabgrass, and foxtail. It is safe for use on all types of grasses, including Bermudagrass, Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass, and Zoysiagrass. The concentrated formula can be easily applied with an Ortho Dial N Spray or tank sprayer.