Technical Abstract: Entomopathogenic nematodes are generally applied for insect control in aqueous suspension using various sprayers or irrigation systems. Novel methods of application can reduce costs and improve efficacy of pest suppression. One potential alternative is to apply nematodes in their infected hosts. Our laboratory experiments indicate advantages of greater dispersal, infectivity, and survival when applying nematodes in infected hosts compared with aqueous application. In greenhouse studies, superior efficacy was observed in suppression of Diaprepes abbreviatus and Otiorhynchus sulcatus when nematodes were applied in infected hosts. Further, our studies indicate it is feasible to store and package nematode infected hosts for commercial application