Ortho WeedClear Weed Killer Spray with Trigger for Lawns, 1 gal. is a powerful weed killer designed to eliminate over 250 common weeds without damaging your lawn. This effective formula targets a wide range of weeds including dandelions, clover, poison ivy, sumac, chickweed, and dollarweed, making it i for residential lawns. It contains three proven ingredients that work by entering weeds through their leaves and traveling throughout the plant to kill it down to the root. You can expect visible results within hours, and the spray becomes rainproof just one hour after drying. Safe for people and pets once dry, this herbicide is applied when weeds are small and actively growing, especially in the spring or fall. Model Number: