Control grubs and beetle larvae, including Japanese beetle larvae, white grubs, and many more. Grub Control contains Beneficial Nematodes, microscopic organisms that seek out and destroy grubs in the lawn and garden. They move through the ground, enter the body cavities of grubs and release bacteria that kill them. Grub Control is best applied in spring or fall but can be used anytime there is grub activity. Grub Control is completely safe for people, pets, and the environment, and can be used with other beneficial insects.