Scotts Turf Builder Triple Action provides three benefits in one bag. This 3-in-1 formula kills and prevents listed weeds, all while feeding and strengthening your lawn. It kills listed broadleaf weeds like dandelion and clover, and prevents crabgrass for up to 4 months. It also prevents other listed grassy weeds, including barnyardgrass, fall panicum, foxtail, and annual bluegrass. Scotts Turf Builder Triple Action is for use on Kentucky Bluegrass, Perennial Ryegrass, Tall Fescue, Fine Fescue, Bermudagrass, Bahiagrass, and Centipedegrass. Apply in the spring before crabgrass appears or after dandelions sprout in your yard. Make sure your grass is wet from dew or sprinkling before applying, as this helps particles adhere to weed leaves to produce the best results. We recommend using a Scotts spreader to apply this product. For Scotts broadcast/rotary spreaders, use a setting of 4.5. For Scotts drop spreaders, use a setting of 7.75. For Scotts Wizz, use a setting of 5. After 24 hours, water the lawn to wash particles onto the soil to prevent the germination of crabgrass. One 20 lb. bag of Scotts Turf Builder Triple Action covers 4,000 sq. ft.