Kills and prevents crabgrass and other grassy and broadleaf weeds for up to 4 months. Apply before germination in lawns and ornamental turf grasses. Provides post-emergence control of seedling crabgrass for up to 4 weeks after it germinates. Provides season long control for some of the toughest weeds, including: bentgrass, fescues, kentucky bluegrass, ryegrass, ect. Made in the usa.