The present invention generally relates to the use of synergistic amounts of Bacillus thuringiensis subsp. aizawai, Bacillus thuringiensis subsp. kurstaki and chlorantraniliprole for the control of diamondback moth, beet armyworm, sugarcane borer, soybean looper, corn earworm, cabbage looper and southwestern corn borer, wherein the ratio of Bacillus thuringiensis subsp. kurstaki to Bacillus thuringiensis subsp. aizawai is from about 1:0.47 to about 1:0.92, and the ratio of the total amount of Bacillus thuringiensis to chlorantraniliprole is from about 1:0.0001 to about 1:20.