Alternatively, an insecticide can be applied to kill the caterpillars. Effective materials, labeled for homeowners should have one of the following active ingredients, bifenthrin, cyfluthrin, diazinon, malathion, pyrethrin, and resmethrin. To prevent the offensive odor associated with the decay of large numbers of caterpillars, homeowners should be sure to sweep up the dead insects and toss them into the compost or a trash bin. The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by the Purdue University Cooperative Extension Service is implied. Any person using products listed assumes full responsibility for their use in accordance with current direction of the manufacturer.
Information listed is valid only for the state of Indiana.