Is any natural or chemical materials widely used in the world in the control of insects that attack agricultural crops or to reduce their spread, and have varying damage to humans, animals and the environment depending on the type.
Scientific studies show that humans used many types of insecticides in the pre-BC era, the Chinese used pesticides, arsenic and tobacco plant to control many of the insects that were limiting their agricultural production at the time, and insecticides were affected by two types of poisoning are gastric poisoning or ingestion and contact poisoning .