Spectracide Grub Killer Concentrate kills white grubs, mole crickets, European crane fly larvae and other pests listed in the table below. It forms a protective barrier in the soil that provides control of listed pests all season long. When applied early, this product kills grubs, mole crickets and European crane flies before they hatch and damage lawns. Contact your County Extension agent for the best dates to apply in your area. Spectracide Grub Killer Concentrate may be sprayed over soil or mulch. Remove weed barrier before applying.