Patent ID: 6469067
Filing Date: 2002-10-22
Classification: A01N,A61P

Abstract:
A method for controlling parasites on an animal comprising the administration to the animal of an amount of a combination of 1-[4-chloro-3-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenyl]-3-(2,6-difluorobenzoyl)urea and a compound of formula (i) whereinR1 is hydrogen or one of radicals R2 is â€”CH(CH3)â€”CH3, â€”CH(CH3)â€”C2H5, â€”C(CH3)&boxH;CHâ€”CH(CH3)2 or cyclohexyl; R3 is hydrogen or hydroxy if the bond between atoms 22 and 23 represents a double bond, or is hydrogen or the group &boxH;Nâ€”Oâ€”CH3 if a single bond is present between atoms 22 and 23; and R4 is HOâ€” or HOâ€”N&boxH;, in an amount effective for controlling parasites on the animal, and wherein the compound of formula (i) is selected from the group consisting of ivermectin, doramectin, moxidectin and selamectin.