Deltamethrin is the world's most effective synthetic pyrethroid insecticide for use in agriculture, being photo stable. It is nonsystemic insecticide which acts by contact and ingestion, and exhibiting a broad spectrum control of chewing and sucking insects.

Deltagold acts on the insects by contact and ingestion. Its high lipophilicity provides a high affinity with the insect cuticle. In the insect body it affects the nerve transmission by acting on axon. It disrupts the conduction of the nervous influx by modifying the kinetics of the function of the sodium canal.