What is the most common route of pesticide exposure to the human body?

The most common route of pesticide exposure to the human body is through the skin. This is largely because the skin is a significant barrier and interface between the body and the environment, and many pesticides can penetrate the skin's layers. When applying pesticides, particularly in agricultural settings, handlers often experience dermal exposure due to spills, splashes, or prolonged contact with treated surfaces. Factors such as the formulation of the pesticide, the area and condition of the skin, and the duration of exposure can all influence the extent of absorption through the skin.

Inhalation is a potential route of exposure, especially for those using aerosolized pesticides or working in environments with poor ventilation. However, it is less common than dermal exposure. Ingestion can occur, but it typically involves accidental swallowing of pesticides, which is not the primary method of exposure for most handlers. Contact with the eyes is a serious concern as well, especially with liquid formulations, but this occurs less frequently than skin exposure. Overall, skin exposure is the most prevalent and warrants careful attention during pesticide use and safety measures.