3-[1-(3-Haloalkyl)triazolyl]phenyl sulphide derivatives of the formula in which A 1 is CHF 2, A 2 is hydrogen, B 0 is hydrogen, amino, halogen, cyano, nitro, alkyl, haloalkyl, alkylthio, haloalkylthio, alkoxy or haloalkoxy, B 1, B 2 and B 3 independently of one another are each hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, cyanoalkyl, hydroxyalkyl, alkoxycarbonylalkyl, alkoxyalkyl, alkenyl, haloalkenyl, cyanoalkenyl, alkynyl, haloalkynyl, cyanoalkynyl, alkoxy, haloalkoxy, cyanoalkoxy, alkoxycarbonylalkoxy, alkoxyalkoxy, alkylthio, haloalkylthio, alkoxyalkylthio, alkylsulphinyl, haloalkylsulphinyl, alkoxyalkylsulphinyl, alkylsulphonyl, haloalkylsulphonyl, alkoxyalkylsulphonyl, acyl, haloalkylcarbonyl, carboxyl, alkoxycarbonyl or NR 3 R 4, where R 3 and R 4 independently of one another are hydrogen, alkyl, haloalkyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, haloalkenyl, cyanoalkenyl, alkynyl, haloalkynyl, cyanoalkynyl, acyl or alkoxycarbonyl, or R 3 and R 4, together with the N atom to which they are attached, may form an optionally substituted saturated or unsaturated, five- to eight-membered ring which is optionally interrupted by heteroatoms, n is the number 0, 1 or 2, R 1 is hydrogen or alkyl, R 2 is hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, cyanoalkyl, alkoxyalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl or haloalkoxyalkyl, or is optionally substituted cycloalkyl or cycloalkenyl each of which is optionally interrupted by one or more heteroatoms, where the 3-[1-(3-haloalkyl)triazolyl]phenyl sulphide derivatives of the formula are not 3-(difluoromethyl)-1-{2,4-dimethyl-5-[(2,2,2-trifluoroethyl)sulphanyl]phenyl}-1H-1,2,4-triazole, 3-(difluoromethyl)-1-{2,4-dimethyl-5-[(2,2,2-trifluoroethyl)sulphinyl]phenyl}-1H-1,2,4-triazole, 1-{5-[(2,2-difluoroethyl)sulphanyl]2,4-dimethylphenyl}-3-(difluoromethyl)-1H-1,2,4-triazole and 1-{5-(2,2-difluoroethyl)sulphinyl]-2,4-dimethylphenyl}-3-(difluoromethyl)-1H-1,2,4-triazole. A 1 is CHF 2, A 2 is hydrogen, B 0 is hydrogen, amino, halogen, cyano, nitro, alkyl, haloalkyl, alkylthio, haloalkylthio, alkoxy or haloalkoxy, B 1, B 2 and B 3 independently of one another are each hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, cyanoalkyl, hydroxyalkyl, alkoxycarbonylalkyl, alkoxyalkyl, alkenyl, haloalkenyl, cyanoalkenyl, alkynyl, haloalkynyl, cyanoalkynyl, alkoxy, haloalkoxy, cyanoalkoxy, alkoxycarbonylalkoxy, alkoxyalkoxy, alkylthio, haloalkylthio, alkoxyalkylthio, alkylsulphinyl, haloalkylsulphinyl, alkoxyalkylsulphinyl, alkylsulphonyl, haloalkylsulphonyl, alkoxyalkylsulphonyl, acyl, haloalkylcarbonyl, carboxyl, alkoxycarbonyl or NR 3 R 4, where R 3 and R 4 independently of one another are hydrogen, alkyl, haloalkyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, haloalkenyl, cyanoalkenyl, alkynyl, haloalkynyl, cyanoalkynyl, acyl or alkoxycarbonyl, or R 3 and R 4, together with the N atom to which they are attached, may form an optionally substituted saturated or unsaturated, five- to eight-membered ring which is optionally interrupted by heteroatoms, n is the number 0, 1 or 2, R 1 is hydrogen or alkyl, R 2 is hydrogen, halogen, cyano, nitro, alkyl, haloalkyl, cyanoalkyl, alkoxyalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl or haloalkoxyalkyl, or is optionally substituted cycloalkyl or cycloalkenyl each of which is optionally interrupted by one or more heteroatoms,