Control the bothersome weeds in your lawn with Ortho Weed B-gon Lawn Weed Killer Concentrate + Crabgrass Control. This weed control product kills major broadleaf and troublesome grass weeds to the roots including dandelion, oxalis, chickweed, clover, dollarweed, crabgrass, foxtail, and more as listed. In addition, this weed killer is rainproof in 1 hour and gets results with 1 application. Use this weed killer for lawns on grasses including Bermudagrass, Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass, and Zoysiagrass. This product is a concentrate and must be mixed with water before application. To use, mix per label directions and apply using a tank sprayer or Ortho Dial N Spray hose-end sprayer, spraying until lawn surface is wet. Apply when weeds are young and actively growing and daytime temperatures are below 90F. Do not allow people and pets to enter the treated area until sprays have dried. This 32 fl. oz. container of Ortho Weed B-gon Lawn Weed Killer Concentrate + Crabgrass Control treats up to 5,000 sq. ft. Trust Ortho to help get rid of weeds in your lawn. Do not apply to Bermudagrass when temperatures exceed 85F.