Insecticide chemical residue on crops is a major concern of both government agencies and consumers. XenTari* DF biological insecticide has no residue restrictions associated with its use, making it ideal for application at the end of the season and right before harvest. In this study XenTari* was applied at the end of a rotational program with Coragen*. This program provided excellent control of heavy infestations of cabbage looper and imported cabbage worms on collards.