Disclosed are insecticides that are used for controlling arthropods and are characterized by an active moiety of an active substance combination comprising (a) at least one compound of formula (I), wherein Het, A, R, and X have the meaning indicated in the description, and (b) at least one compound which improves crop plant tolerance and is part of the group of compounds indicated in the description. Also disclosed is a method for controlling arthropods by treating plants and the seeds thereof with the inventive insecticides.
