Provided are 1-aryl-5-alkyl pyrazole compounds, of formula (I): wherein: R1 is hydrogen, cyano, halogen, R8, formyl, -C(O)R8, -C(O)OR8, -C(O)NR9R10, or -C(S)NH2 R2 is R8 or -S(O)mR11 R3 is methyl, ethyl or C1-C4 haloalkyl R4, R5 and R7 are independently hydrogen, halogen, alkyl, haloalkyl, cyano or nitro R6 is halogen, alkyl, haloalkyl, alkoxy, haloalkyloxy, cyano, nitro, -C(O)R12, -S(O)n R12 or SF5 Z is a nitrogen atom or C-R13 R3 is alkyl, haloalkyl, cycloalkyl or halocycloalkyl R9 is hydrogen, alkyl, haloalkyl or alkoxy R10 is hydrogen, alky), haloalkyl or alkoxy Rn is alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl or cycloalkyl R12 is alkyl or haloalkyl R13 is hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, alkoxy or haloalkoxy m is O, 1 or 2 and n is 0, 1 or 2 or a salt thereof, the method of making compounds of formula (I) and the use of these compounds against ectoparasites, endoparasites and pests.
