Abstract: The present invention relates to the use of compounds of formula ##STR1## wherein A is an unsubstituted or mono- to tetrasubstituted, aromatic or non-aromatic, monocyclic or bicyclic heterocyclic radical, where one to two of the substituents of A can be selected from the group consisting of halo-C.sub.1 -C.sub.3 alkyl, cyclopropyl, halocyclopropyl, C.sub.2 -C.sub.3 alkenyl, C.sub.2 -C.sub.3 alkynyl, halo-C.sub.2 -C.sub.3 alkenyl, halo-C.sub.2 -C.sub.3 alkynyl, halo-C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio, halo-C.sub.1 -C.sub.3 alkylthio, allyloxy, propargyloxy, allylthio, propargylthio, haloallyloxy, haloallylthio, cyano and nitro, and one to four of the substituents of A can be selected from the group consisting of C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy and halogen; R is hydrogen, C.sub.1 -C.sub.6 alkyl, phenyl-C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.2 -C.sub.6 alkynyl; and X is N--NO.sub.

Abstract: Parenterally injectable compositions for controlling parasites, which compositions contain from 0.1 to 10% of a benzoylurea as active ingredient, from 0.1 to 60% of a 1-substituted azacycloalkan-2-one, from 2 to 90% of a physiologically tolerable surfactant or mixture of surfactants and, if appropriate, as stabilizing component, from 0.05 to 15% of an acid or a buffer mixture and add 100% of a physiologically tolerable hydrophilic solvent or mixture of solvents or a mixture of physiologically tolerable hydrophilic and lipophilic solvents.