Disclosed is a method for protecting an animal from a parasitic invertebrate pest comprising treating an animal orally or by injection with a pesticidally effective amount of a compound of Formula 1,whereinR1 is halogen, C1-C3 haloalkyl or C1-C3 haloalkoxyR2 is H, halogen, C1-C3 alkyl, C1-C3 haloalkyl or cyanoR3 is H, halogen, C1-C3 haloalkyl or C1-C3 haloalkoxyR4 is halogen, C1-C3 alkyl, C1-C3 haloalkyl or C1-C3 haloalkoxyR5 is H, CH3, C2-C4 alkylcarbonyl, C2-C4 haloalkylcarbonyl, C2-C5 alkoxycarbonyl or CH2O(C1-C3 alkyl)R6 is C1-C6 alkyl, C1-C6 haloalkyl, C3-C6 cycloalkyl or C3-C6 halocycloalkyl, each group substituted with one R7 or R6 is (CH2)mQand Q, R7, R8a and R8b are as defined in the disclosure.
