Spectracide Weed Stop for Lawns3 kills more than 460 types of weeds as listed, including dandelion, chickweed and clover, as well as yellow nutsedge. Use it to treat your lawn, including bluegrass, fescue, Bermuda, perennial ryegrass and zoysia (do not apply to zoysia just emerging from dormancy). This powerful formula kills weeds by contact - down to the root - producing visible results in hours. When used as directed, Spectracide Weed Stop for Lawns3 kills weeds without harming your lawn. Apply when daytime temperatures are between 45° and 90° F. Lawn damage could happen above 90° F. Read the entire label before using. The AccuShot Sprayer reduces hand fatigue with a 2-finger trigger and a continuous action power sprayer - no pumping or squeezing, just press to spray. This battery-powered wand is also extendable for improved accuracy (batteries included). The AccuShot sprayer is reusable - keep it for use with Spectracide Weed Stop for Lawns4 AccuShot Refill.