Scotts Turf Builder Triple Action1 provides three benefits in one bag. It also prevents other listed grassy weeds, including barnyardgrass, fall panicum, foxtail, and annual bluegrass. Scotts Turf Builder Triple Action1 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 33.94 lb. bag treats 12,000 sq. ft.