Diamid T&O insecticide utilizes the active ingredient chlorantraniliprole to deliver season-long grub control with tremendous application flexibility and convenience. The highly concentrated formulation in Diamid T&O performs best when applied early. A single (4 8 fl oz/A) application, in early spring, will deliver control of all grub species and key surface feeding pests including several species of caterpillars as well as annual bluegrass weevil.