Pirimiphos-methyl is widely used as an organophosphate insecticide in agricultural settings to control a variety of insect pests, particularly in stored grains and cereal crops. It is effective against pests such as weevils, beetles, and moths that damage stored products, helping to preserve grain quality over long periods. The compound is also applied in vector control programs to manage mosquito populations, contributing to the prevention of malaria and other mosquito-borne diseases. Its mode of action involves inhibiting acetylcholinesterase, leading to nervous system disruption in target insects. Due to its efficacy and residual activity, it is often formulated in sprays, powders, or impregnated materials for use in both pre- and post-harvest protection.