The invention relates to the use of known and novel phenalkyl carboxamide derivatives of the formula (I) wherein the structural elements have the meaning as indicated in the description, for the control of nematodes and/or other helminths, particularly in agriculture and in the animal health field, formulations containing such compounds, particularly agrochemical formulations, and methods for the control of nematodes and helminths. The invention further relates to novel phenalkyl carboxamide derivatives, processes for their preparation, formulations containing such compounds, methods for the control of nematodes and helminths and their use as pest controlling agents, particularly their use as nematicides and their use as anthelmintics against endoparasites in animals and humans.本發明係有關如式(I)之已知與新穎之苯烷基羧醯胺衍生物之用途其中結構元素係如說明書中指示之定義,其係用於控制線蟲與/或其他蠕蟲,特別指出現在農業與動物健康領域中者,並有關包含此等化合物之調配物,特別指農化調配物,及控制線蟲與蠕蟲之方法。本發明進一步係有關新穎之苯烷基羧醯胺衍生物、其製法、包含此等化合物之調配物、控制線蟲與蠕蟲之方法、及其作為害蟲控制劑(特別用為殺線蟲劑)之用途,及其作為對抗動物與人類之體內寄生蟲之殺蠕蟲劑之用途。