Make troublesome lawn weeds a problem of the past. Roundup For Lawns kills weeds, roots and all (when used as directed), with up to 3 month weed control (as listed). This product kills 253 types of weeds (see inside booklet for weed list), including crabgrass, dandelion, clover, yellow nutsedge, poison ivy, chickweed, oxalis, and purslane. This weed killer now comes with a battery-powered QuickHand sprayer for that is easy to use with one hand.