Fall armyworm and western bean cutworm are pests of corn in some areas of the northwestern Texas Panhandle. Herculex® I corn has been reported to suppress pests. However, local research has not been conducted to determine the response of these insects to Herculex® I corn. Response by fall armyworm and western bean cutworm to Herculex® I, YieldGard® Corn Borer and non-Bt corn was evaluated in field and laboratory assays. Foliage and tassels of Herculex® I corn were less damaged than was YieldGard® and non-Bt corn. Fall armyworm larvae gained less weight on Herculex® I corn than on YieldGard® or non-Bt corn. Larval development of western bean cutworm was delayed on Herculex® I when compared to YieldGard® and non-Bt corn. More intensive studies are planned for 2004 to develop comprehensive information on response by fall armyworm and western bean cutworm to YieldGard® and Herculex® I corn.