Get rid of over 250 common weeds, like dandelions, poison ivy, and dollarweed, without harming your lawn with Ortho WeedClear Weed Killer for Lawns Ready-To-Spray. Its three-ingredient formula targets and destroys weeds, while being safe for residential lawns. Results are visible in hours, and the product is rainproof within one hour after drying. One 32-oz. bottle covers up to 16,000 sq. ft. for optimal weed control.