anticoagulant substance in a liquid aromatic hydrocarbon solvent in the presence of an emulsifier these compositions when diluted with water can be used for the destruction of rodents by spraying the areas in which grow vegetables serving as foodstuffs for the rodents to be destroyed application_number US 61190875 A description thus in accordance with the present invention there is provided a rodenticidal composition comprising a solution or emulsion of 2 u03b1 p chlorophenyl u03b1 phenylacetyl 1 3 indanedione the common name for which is 34 chlorophacinone 34 in a liquid monocyclic aromatic hydrocarbon solvent in the presence of an emulsifier benzene and benzene derivatives which are substituted by one or more straight or branched chain saturated alkyl radicals are suitable for use as the aromatic hydrocarbon solvent in the rodenticidal composition it is advantageous to use as the benzene derivative benzene substituted by at least one methyl ethyl propyl isopropyl butyl isobutyl amyl isoamyl sec amyl tert amyl or isohexyl radical the benzene may be substituted by several identical or by different alkyl radicals xylene i e dimethylbenzene is a solvent which has been found to be particularly suitable xylene can be used in the form of a mixture of its three isomers or in the o xylene 1 2 dimethylbenzene m xylene 1 3 dimethylbenzene or p xylene 1 4 dimethylbenzene form toluene i e methylbenzene as well as cumene i e isopropylbenzene and cymene i e isopropyl methylbenzene used in the form of a mixture of isomers or in the form of o cymene.