Abstract: Mixtures of organic insecticides of the organophosphate types or of the carbamate type, with certain fatty acids or their salts, have been found to have enhanced insecticidal activity. The fatty acids found operative are the unsaturated 18-carbon atom ones. The mixtures are toxic to both sucking insects and defoliators. The weight ratio of organophosphate or carbamate to fatty acid can range from about 1:1 to about 1:200 respectively. The amounts of the organophosphate or carbamate required for substantial effectiveness can be reduced significantly by concurrent use of the fatty acid. The fatty acid is more environmentally acceptable than the other types of insecticides mentioned. This unique composition can be used to protect against a broader range of insects.

Abstract: Mixtures of organic insecticides of the organophosphate types or of the carbamate type, with certain fatty acids or their salts, have been found to have enhanced insecticidal activity. The fatty acids found operative are the unsaturated 18-carbon atom ones. The mixtures are toxic to both sucking insects and defoliators. The weight ratio of organophosphate or carbamate to fatty acid can range from about 1:1 to about 1:200 respectively. The amounts of the organophosphate or carbamate required for substantial effectiveness can be reduced significantly by concurrent use of the fatty acid. The fatty acid is more environmentally acceptable than the other types of insecticides mentioned. This unique composition can be used to protect against a broader range of insects.