Kills many different kinds of weeds, at many stages of development, but what makes this product unique, is that it is the only effective granular post emergent crabgrass killer currently available for home lawn use, and timing applications for good results is no longer necessary. Formulated on a light carrier for better leaf adhesion and effectiveness. Treats northern and southern lawns (not Centipedegrass or St. Augustinegrass) Rates as low as 2.4 lbs. /1000 sq. ft.