Kill weeds without harming your lawn. Kills over 250 common weeds, including dandelions, clover, poison ivy, chickweed, and dollar weed (see product label for complete weed list). This herbicide works by entering weeds through their leaves, and moves throughout the plant to kill all the way down to the root. Visible results in hours, rainproof within one hour upon drying. Easy application with the ready-to-use trigger sprayer (included) and turn the nozzle to your desired setting. People and pets may enter the treated area after the spray has dried. For best results, use when weeds are small and actively growing in the spring or fall.