Myzus persicae has been a pest of field-grown tobacco in N. Carolina for the past several years. Of 10 insecticides used, 1% tetraethyl pyrophosphate in aerosol form killed aphids more rapidly than any of the other formulae tried but had no residual effect; parathion dust at 1% was next in rapidity of kill and was most effective in residual activity. The other materials used included a spray made from the purified, odorless from of gamma benzene hexachloride; tetraethyl pyrophosphate dust, a rotenone piperonyl cyclonene dust, and the following aerosols[long dash]10% DDT, 5% DDT-5% chlorinated camphene, and 1% rotenone-0.2% pyrethrins-3% piperonyl butoxide. Foliage burn occurred only where the aerosol bomb outlets were held too close to the plant.