Field treatments 2003 & 2004 early summer season, the 9 assayed treatments bacterial biopesticides alone and mixed with additives (molasses 10% and K2C03 1%) were evaluated against Sesamia cretica (Led.) in maize fields. Dipel at lower concentration [I] + molasses 10%, Dipel at higher concentration [II] and Dipel [I] + K2C03, could be, fairly, considered the best treatments. Those led to more than 80% reduction in egg-masses, mostly more than 7O% reduction in S. cret/ca larval counts, more than 75% reduction in the dead heart-cases, increasing the resultant dry ears yield (17.1, 16.0 and 14.8 ardab / feddan), reflects 95.9, 83.7 and 69.4% increase in corn yield than control, respectively. In addition, these treatments manifested latent effect when caused severest reduction in pupal weight ranged 30.9 to 43.56% than control. Also, evaluation of these treatments proved as more safe of predaceous insects when achieved higher numbers of predaceous insects were recorded after using D [I] + molasses and D [Ij + K2C03 in early summer maize season. Accordingly these treatments have to be considered as main component of the integrated pest management items of the pink stem borer S. cretica Led.