Ortho WeedClear Weed Killer Spray with Comfort Wand for Lawns, 1 gal. is a powerful weed killer designed to eliminate over 250 common weeds without harming your lawn. It effectively targets weeds such as dandelions, clover, poison ivy, sumac, chickweed, and dollarweed, making it i for residential lawns. This herbicide contains three proven ingredients that work by entering weeds through their leaves and moving throughout the plant to kill it down to the root. You will notice visible results within hours, and the formula becomes rainproof within one hour after drying. It is safe for people and pets to enter the treated area once the spray has dried. For optimal results, apply when weeds are small and actively growing during the spring or fall.