Your lawn can have it all when you use Scotts Turf Builder Triple Action Built For Seeding. Designed for DIY homeowners to use when planting new grass, this lawn weed preventer plus fertilizer prevents dandelion and crabgrass for up to 6 weeks without harming new grass, jump starts grass development so it establishes thicker and quicker, and feeds to protect against heat and drought. Other weeds prevented are clover, ground ivy, chickweed, henbit, and nutsedge. Apply Scotts Turf Builder Triple Action Built For Seeding to a dry lawn when temperatures are consistently between 60°F and 90°F, then lightly water to activate. This product is for use on newly seeded, overseeded, or newly planted Kentucky Bluegrass, Tall Fescue, Perennial Ryegrass, Centipedegrass, and Fine Fescues. We recommend applying this lawn care product with a Scotts spreader. For Scotts broadcast/rotary spreaders, use a setting of 4 1/2. For Scotts drop spreaders, use a setting of 7. For Scotts Wizz, use a setting of 4 3/4. This product does not include grass seed and will not kill existing weeds. One 17.2 lb. bag covers 4,000 sq. ft.