total content of prallethrin and neonicotinoid compounds is usually from 0 005 to 50 by weight the above mentioned formulations may be obtained by standard methods for example mixing pralethrin and neonicotinoid compounds with solid or liquid carrier s and optionally adding auxiliaries such as emulsifiers or adhesives as the carrier that is used in the situation of formulating the following are suitable suitable solid carriers include for example natural occurring or synthetic minerals such as clay kaolin talc bentonite sericite quartz sulfur active carbon calcium carbonate diatomaceous earth pumice calcite sepiolite dolomite silica alumina vermiculite and perlite as well as powdered forms of sawdust an ear of corn palm tree coconut shelis and tobacco stems suitable liquid carriers include for example aromatic or aliphatic hydrocarbons such as xylene toluene alkylnaphthalene phenylxylylethane kerosene gas oil hexane and cyclohexane halogenated hydrocarbons such as chlorobenzene dichloromethane dichloroethane and trichloroethane alcohols such as methanol ethanol isopropyl alcohol butanol and hexanol ethers such as diethyl ether tetrahydrofuran and dioxane esters such as ethyl acetate and butyl acetate ketones such as acetone methyl ethyl ketone methyl isobutyl ketone and cyclohexanone nitrites such as acetonitrile and isobutyronitrile dimethylsulfoxide amides such as n n dimethylformamide and n n.