| 摘要 |
Acaricidal compositions comprising a pyrethroid of formula <IMAGE> wherein Z and Z1 are the same or different and each is halo and wherein X is hydrogen or cyano, provided that when Z and Z1 are both chloro, X must be cyano together with at least one organophosphorus compound, formulations containing them and their use for the control of veterinary ectoparasites of the sub-Orders Ixodoidea and Sarcoptiformes. |
