Pesticides are chemicals developed to kill pests which include insects, weeds, fungi or rodents. Pesticides are widely used on agricultural crops, in the home, for mosquito control, in yards, and in public places. The types of pesticides commonly used are also called insecticides, herbicides, fungicides and rodenticides.
Pesticides are designed to be harmful to pests. When not used properly, pesticides can cause harm to humans, animals, or the environment. The severity of pesticide poisoning depends on the toxicity of the chemical ingredients, the amount of the pesticide, the length of time of the pesticide exposure, and how the pesticide enters the body.