The present invention generally relates to the use of synergistic amounts of Bacillus thuringiensis subsp. kurstaki and chlorantraniliprole for the control of Diamondback Moth, Beet Armyworm, Sugarcane Borer, Soybean Looper and Corn Earworm. Specifically, the synergistic ratio of Bacillus thuringiensis subsp. kurstaki to chlorantraniliprole is from about 1:0.001 to about 1:3.