KILLS WEEDS, NOT THE LAWN: Wont harm lawns when used as directed kills more than 250 types of weeds as listed.CONTROLS CRABGRASS: Controls major broadleaf and troublesome grass weeds, including crabgrass, dandelion, chickweed and clover, as well as foxtail and yellow nutsedge (see product label for complete list).KILLS THE ROOT: Visible results in 8 hours.RAINFAST: Rainfall or watering 3 hours after application will not wash away effectiveness.ACCUSHOT SPRAYER: Continuous power sprayer for precise application reusable with Spectracide Weed Stop For Lawns Plus Crabgrass Killer2 (refill sold separately).