The present application relates to active compound combinations of pyrazin-2-ylpyrazoles (component A) with at least one further ectoparasiticide or synergists (componene B), and to products comprising such active compound combinations. These active compound combinations are suitable for controlling animal pests in the field of veterinary medicine.本申請案係關於吡-2-基吡唑(組份A)與至少一種其他殺外寄生蟲劑或協合劑(組份B)之活性化合物組合物,及關於包含此等活性化合物組合物之產物。此等活性化合物組合物適合於獸醫用藥領域中控制動物害蟲。