Get rid of weeds without harming your lawn. Ortho Chickweed, Clover and Oxalis Killer for Lawns Concentrate is formulated to kill tough weeds in your lawn. This weed control for lawns also kills Ground Ivy (Creeping Charlie), Speedwell (Veronica), Wild Violet, and other tough lawn weeds as listed. Plus, the spray won't harm your lawn-guaranteed. This weed killer spray may be used on Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass, and Zoysiagrass. The formula is rainproof in 6 hours. To use in a tank sprayer, add 1 fl. oz. per gallon of water for every 200 sq. ft. of lawn. This weed killer concentrate may also be used with an Ortho Dial 'N Spray sprayer. This product must be diluted before use. Apply when temperatures are below 90 deg. F. Do not use on Bahiagrass, Bermudagrass, Centipedegrass, Kikuyugrass, or St. Augustinegrass lawns. This 16 oz. container of Ortho Chickweed, Clover and Oxalis Killer for Lawns Concentrate treats up to 3,200 sq. ft. of lawn.