The Relative Effectiveness of Two Synthetic Pyrethroids More Toxic to House Flies than Pyrethrins in Kerosene Sprays

Abstract

An analog of allethrin with the propargyl group replacing the allyl group as the side chain of the ketoalcoholic component was 64% as toxic as allethrin and 195% as toxic as pyrethrins to house flies (Musca domestica L.) by the turntable method. An analog with the phenyl group replacing the isobutenyl group of the acid component was 41% as toxic as allethrin and 120% as toxic as pyrethrins; however, it was only 34% as toxic as the corresponding isomeric form of allethrin.