Biological Control of White Grubs TERRANEM is the perfect biological solution to control white grub problems in your lawn. Why choose TERRANEM? Safe for people and pets Harmless to plants Effective on all species of white grubs All natural Easy to apply Koppert Biological Systems has studied many different species of beneficial nematodes and selected Heterorhabditis bacteriophora as the most effective for controlling white grubs in lawns and gardens.