Organophosphates (OPs) and carbamates are two major classes of insecticides that primarily act by inhibiting the enzyme acetylcholinesterase (AChE), but they differ significantly in the nature and reversibility of their action. Acetylcholinesterase is responsible for hydrolyzing the neurotransmitter acetylcholine at synapses, thus terminating nerve impulses. Inhibition of this enzyme leads to the accumulation of acetylcholine, resulting in continuous stimulation of cholinergic receptors, hyperexcitation of the nervous system, and eventual paralysis or death of the insect. Organophosphates inhibit AChE by phosphorylating the serine hydroxyl group at the active site of the enzyme. This phosphorylation is often irreversible under physiological