The present invention provides a synergistic insecticidal composition comprising three components (A) buprofezin, (B) thiamethoxam and (C) lambda-cyhalothrin. There is also provided a process for preparing the insecticidal composition. The present invention is also related to a method to prevent, control and/or treat insect infestations in plants, plant parts and/or their surroundings by applying the synergistic insecticidal composition comprising three components (A) buprofezin, (B) thiamethoxam and (C) lambda-cyhalothrin.
