| 摘要 |
The present invention provides a method to control ecto-parasites of a host animals wherein 1-(2,6-difluorobenzoyl)-3-Ä2-fluoro-4-(1,1,2,3,3,3-hexafluoropropoxy)p henylÜurea is applied to the said host animals. By the method of the present invention, ecto-parasites of animals can be controlled effectively for a long period of time. |
