| 摘要 |
The present invention is a method for controlling ectoparasites. More particularly, the invention relates to a method of treatment in which the warm blooded animal is dosed with an ovicidally effective amount of a heterocyclic nitrogen compound selected from the group represented by the formula: <IMAGE> wherein R1, is either one of the following groups: <IMAGE> <IMAGE> <IMAGE> R2 and R3 are the same or different, each a hydrogen atom, a halogen atom or a methyl group; R4 is a halogen atom or a methyl group; R5 and R6 are the same or different, each a hydrogen atom, a halogen atom, a C1-C4 haloalkyl group or a C1-C4 haloalkoxy group; X, Y and Z are the same or different, each an oxygen atom, a sulfur atom or a methylene group, which is transmitted to the ectoparasite by the animal's blood. In a further embodiment, a compound selected from the group consisting of ivermectin, milbemycin, milbemycin oxime, moxidectin and avermectin and avermectin derivatives.
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