The power is in your hands to keep your landscape in line - unleash it with Spectracide lawn and garden products. Our easy-to-use, fast-acting insect, lawn disease and weed control solutions help you tame lawn and landscape invaders with incredible pest-punishing power. Take command with Spectracide brand. You hold the power.Spectracide Weed Stop For Lawns Concentrate controls more than 200 types of weeds as listed - and it won't harm your lawn when used as directed. This concentrated formula kills down to the root, with overnight results. It controls all major broadleaf weeds, including dandelion, chickweed and clover (see product label for complete list). This product is rainfast in 6 hours, so it won't wash off. Available as a 32 ounce dilutable concentrate and as a 32 ounce ready-to-spray concentrate with a QuickFlip sprayer that attaches to your garden hose.For best results, mow before treating weeds with Spectracide Weed Stop For Lawns Concentrate. Spray in spring when weeds are small and growing, or in fall when many problem weeds germinate - treating in fall will eliminate many of next year's weeds. If certain tough weeds are not dead within 3 weeks, repeat spot treatment. Read the entire label before using.