A water dispersible granular biological insecticide for the control of lawn caterpillars, American bollworms, semi-loopers, leafroller in the home garden. It is not harmful to bees, birds and pets, and it kills actively feeding caterpillars – once ingested, it disintegrates the wall of the digestive tract, feeding stops and death occurs within 24 hours. It effectively controls the larval stage. The granule can be applied up to the time of harvest.