Numbers of almond moths, Cadra cautella (Walker), infesting small kraft-paper bags in 44.7-m-3 rooms with and without the hymenopterous parasite Venturia canescens (Gravenhorst) were determined. Bags contained 100 g of cornmeal and were either open, folded, or heat-sealed (taped). Significantly fewer bags of each type were infested by C. cautella dispersing from adjacent infested food debris when V. canescens was present. Numbers of moth larvae in the open, folded, and taped bags were also significantly reduced when the parasites were present. Benefits of making the bags insect-tight were obvious; numbers of infested, taped bags were significantly less than numbers of infested, open bags from both the rooms with and without parasites. In addition, numbers of larvae in infested, taped bags were significantly less than those recovered from open bags from rooms with and without parasites. none