Get rid of listed weeds in your lawn with Ortho Weed B-gon Lawn Weed Killer Ready-To-Spray + Crabgrass Control. This weed control product kills all listed grass and broadleaf weeds, including chickweed, clover, crabgrass, dandelion, foxtail, oxalis, purslane and spotted spurge. In addition, this lawn weed killer kills weeds to the root, is rainproof in 1 hour and gets results with just 1 application. When used as directed, this product kills weeds without harming listed grasses, including Bermudagrass, Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass and Zoysiagrass. To apply, attach your garden hose to the sprayer. Slide the switch to "ON" and spray evenly only until the surface of the lawn is wet. For best results, apply when weeds are young and actively growing, and when daytime temperatures are below 90°F*. If the lawn is dry, water 24 hours before application. Do not allow people or pets to enter the treated area until sprays have dried. One 32 oz. container of Ortho Weed B-gon Lawn Weed Killer Ready-To-Spray + Crabgrass Control treats up to 5,000 sq. ft. *Do not apply to Bermudagrass when temperatures exceed 85°F.