Ortho WeedClear Weed Killer RTU Liquid 24 Oz 0205710 is designed to instantly kill over 250+ common lawn weeds, including dandelions, clover, poison ivy and more. This ready-to-use spray offers effective and fast-acting weed control, with visible results in just hours that become rainproof within one hour after drying. Its specialized formula contains three powerful active ingredients that target weeds, without harming your lawn when used as directed. A no-mix formula and adjustable sprayer lets you easily apply directly to weeds for optimal results. People and pets may enter the treated area after the spray has dried.