Ortho Weed B Gon Chickweed, Clover, & Oxalis Killer Spray for Lawns, 32 oz. is a powerful weed killer specially formulated to eliminate tough weeds in your lawn when used as directed. This effective formula targets and kills stubborn weeds such as ground ivy (creeping charlie), speedwell (veronica), wild violet, and other difficult lawn weeds. It becomes rainproof just 6 hours after application, ensuring lasting protection. Suitable for use on Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass, and Zoysiagrass, this spray works when applied while weeds are actively growing and when temperatures are below 90 degrees Fahrenheit. Keep your lawn healthy and weed- with this reliable solution. Model Number: