Scotts Turf Builder Triple Action1 Fertilizer provides three benefits in one bag. This 3-in-1 lawn formula kills and prevents weeds, all while feeding and strengthening your lawn. This lawn treatment kills broadleaf weeds, including dandelions and clover, and prevents crabgrass for up to 4 months. The lawn treatment also prevents other listed grassy weeds, including barnyardgrass, fall panicum, foxtail, and annual bluegrass. The lawn treatment can be applied to Kentucky Bluegrass, Perennial Ryegrass, Tall Fescue, Fine Fescue, Bermudagrass, Bahiagrass, Centipedegrass, and Zoysiagrass. Apply with a Scotts spreader when dandelions are actively growing. Make sure the grass is wet from dew or watering before applying to help the particles adhere to weed leaves. After 24 hours, water the lawn to wash particles into the soil to prevent germination of crabgrass and other listed grassy weeds. Do not allow people and pets to re-enter the treated area until dusts have settled. A 11.31 lb. bag treats 4,000 sq. ft. of lawn.