abstract |
The present invention provides a method to controlnecto-parasites of a host animals wherein 1-(2,6-difluorobenzoyl)-3-[2-fluoro-4-(1,1,2,3,3,3-hexafluoropropoxy)phenyl]urea is applied to the said hostnanimals. n By the method of the present invention, ecto-parasitesnof animals can be controlled effectively for a long periodnof time. |