Grubs feed on grass roots and organic soil matter that causes sections of lawn grass to die. They especially like moist lawns- so water deeply and infrequently to keep grass healthy, but not overwatered!!! To check if grubs are to blame for your dead patches, lift a piece of your turf. If Grubs are the culprit, the dead patch will roll up like a carpet. Grub damage to lawn is also caused by birds, skunks, armadillos, raccoons or moles are tearing up your lawn to eat the Grubs. Immature Grubs are most susceptible to pesticides while young. For most this means applying pesticides while newly hatched are feeding —in mid-to late summer and early fall. Listen in as Garrett gives us more info: