Either natural grub controls or chemical grub controls can be used to get rid of lawn grubs. The natural way involves killing the grubs by use of a milky spore powder, nematodes or neem oil. The chemical method involves killing the grubs with insecticides rich in halofenozide, imidacloprid or thiamethoxam.
Milky spore is a natural bacterium that kills grubs. Lawn owners should follow the instructions that come with the milky spore powder for application. Nematodes are small worms that live in the soil and kill lawn grubs by feeding on their bodies. Nematodes should be applied when the intensity of the sunlight is low to prevent them from drying out quickly. Neem oil is a natural grub-repelling substance extracted from the tropical neem tree and should be mixed with water according to the manufacturer's instructions before spraying. It keeps the grubs away from the lawn, preventing them from laying their eggs or feeding on the lawn.
Before using a chemical insecticide, the lawn owner cuts the lawn to about a 3-inch height for efficient access of the insecticide to the stems and roots of the lawn, following up by raking away the cut grass. The insecticide should then be applied according to the manufacturer's instructions and the lawn watered immediately to allow the chemical to trickle down and kill the grubs.