solvents for the compounds of this invention and liquids in which the toxicant is insoluble or only slightly soluble examples of such solvents and liquid carriers generally are alcohols for example isopropyl alcohol ketones such as acetone methyl ethyl ketone methyl isobutyl ketone and cyclohexanone ethers aromatic hydrocarbons such as benzene toluene and xylene petroleum fractions such as kerosene light mineral oils chlorinated hydrocarbons such as carbon tetrachloride perchlorethylene trichloroethane including liquefied normally vaporous gaseous compounds mixtures of different liquids are often suitable if used the surface active agent may be an emulsifying agent or a dispersing agent or a wetting agent it may be nonionic or ionic surface active agents usually applied in formulating pesticides may be used examples of such surface active agents are the sodium or calcium salts of polyacrylic acids and lignin sulfonic acids the condensation products of fatty acids or aliphatic amines or amides containing at least 12 carbon atoms in the molecule with ethylene oxide and or propylene oxide fatty acid esters of glycerol sorbitan sucrose or pentaerythritol fatty acid salts of low molecular weight mono di and trialkylamines condensates of these with ethylene oxide and or propylene oxide condensation products of fatty alcohols or alkyl phenols for example p octylphenol or p octylcresol with ethylene oxide and or propylene oxide sulfates or sulfonates of these condensation products alkali or alkaline earth metal salts preferably sodium salts of sulfuric or sulfonic acids esters containing at least 10 carbon atoms in the molecule for example sodium lauryl sulfate sodium secondary alkyl sulfates sodium salts of sulfonated castor oil and sodium alkylaryl sulfonates such as sodium dodecylbenzene sulfonate and polymers of ethylene oxide and copolymers of ethylene oxide and propylene oxide the compositions of the invention may be formulated.