Spyder is a water dispersible granule formulation that offers effective control of a broad spectrum of weeds and undesirable grasses throughout the growing season. Spyder provides preemergent and postemergent activity to control hard-to-kill annual and perennial grasses and broadleaf weeds. The active, a herbicide that is absorbed through the leaves and root system of the weed, subsequently stops growth by inhibiting cell division in the weed's tips, roots and shoots.