Thiamethoxam (CGA 293'343) is a novel broad spectrum insecticide currently under worldwide development and market introduction by Novartis Crop Protection AG. The molecule belongs to a new chemical class - the neonicotinoids. Neonicotinoids have a new mode of action interfering with the nicotinic acetylcholine receptor of the nervous system of insects. This insecticidal target is different from all known mode of actions. Therefore it provides also control of OP, carbamate and pyrethroid resistant insects.