The Insecticide Resistance Action Committee (IRAC) was formed in 1984 and works as a specialist technical group of the industry association CropLife to be able to provide a coordinated industry response to prevent or delay the development of insecticide resistance in insect, mite and nematode pests.
[4] IRAC publishes an insecticide mode of action (MoA) classification that lists most common insecticides and acaricides and recommends that "successive generations of a pest should not be treated with compounds from the same MoA Group".
[5][6] IRAC assigns a mode of action (MoA) to an insecticide, based on sufficient scientific data.
Sought after are insecticides which have improved properties or which kill different orders or species of insect.
The number of insecticides in the IRAC class listing as of 2024[update] is given in column Nr (A).