Scotts® Turf Builder® Triple Action provides three benefits in one bag; it kills weeds, including dandelions and clover, prevents future weeds like crabgrass and other grassy weeds, all while feeding and strengthening your lawn. Prevents crabgrass for 4 months and feeds to build thick green lawns. Also prevents barnyardgrass, fall panicum, foxtail, annual bluegrass, broadleaf weeds, corn speedwell, prostrate spurge, knotweed, purslane, chickweed, henbit and oxalis. Scotts® Turf Builder® Triple Action is for use on the following grasses, including Kentucky Bluegrass, Perennial Ryegrass, Tall Fescue, Fine Fescue, Bermudagrass, Bahiagrass, Centipedegrass, and Zoyiagrass.