Post-harvest insecticide to control Grain storage pests (maize weevil; Sitophilus zeamais and Larger grain borer; Prostephanus truncatus).

Pirimiphos-methyl rapidly penetrates the insect cuticle and disrupts nerve conduction via the inhibition of acetylcholinesterase. Thiamethoxam is considered to act by interfering with the nicotic acetylcholine receptor of the nervous system of insects.