Jojoba oil preparations (Nat 1 and Natcom 40) and bestachia leaves extracts (in water, methanol and acetone) in addition to Diazinox were assayed for effectiveness against Sesamia cretica Led. in 2002 & 2003 early summer maize plantations. Data revealed that methanol-bestachia extract caused severe reduction in egg-mass counts (86.5% than control). Nat 1 caused the highest reduction in larval counts (81.4%). The highest reduction in number of plants containing perforated leaves and dead hearts (81.2 and 86.5% than control, respectively) were due to Nat 1 treatment. increasing the resultant dry ears yield (24.9 ardab / feddan), reflects 86.7% increase in corn yield than control. In addition, these materials manifested prolonged effects when caused a longer pupal period than control (9 days), 49% reduction in pupal weight Also, these materials had a delayed effect on deposited eggs 61 and 69.6% reductions, respectively, in hatching larvae were recorded than control. Data from the lab. were, almost, in the same trend as those from the field in which the shortest LT_so values (4.24, 3.01 and 2.53 days) for the V; 3⁴¹ and 5^° instars larvae treated with Nat 1 at 1% concentration. Also, the lowest LC_so values were occurred for the three respective instars in the treatments of acetone-bestachla extract (0.079 - 0.098%) and Nat 1 (0.087 - 0.121%). Jojoba oil (Nat I) and bestachia leaves extracts could be considered as successful natural agents as used in an integrated pest control program of S. creba9 in maize plantations.