Which route of entry do pesticides enter the body most often?

The most common route through which pesticides enter the body is dermal, or skin absorption. This is particularly significant in agricultural work and pesticide application scenarios where handlers often come into direct contact with pesticides. The skin is a permeable barrier, and many pesticides are formulated to be absorbed quickly upon contact. Factors such as the formulation of the pesticide, the condition of the skin (e.g., cuts or abrasions), and the duration of exposure can significantly influence absorption rates.

While inhalation is also a valid route, as aerosols and vapors can be inhaled into the respiratory system, dermal exposure accounts for a broader range of incidents, particularly because many pesticides are used in liquid form that can easily splash or come into contact with the skin. Ingestion typically occurs less frequently compared to dermal exposure among pesticide users, as it generally involves accidental consumption or poor hygiene practices after handling pesticides. Injection is the least common route, as it is not a standard method of exposure in typical pesticide usage scenarios.

Thus, the dermal route stands out as the primary concern in occupational safety regarding pesticide exposure, emphasizing the importance of wearing protective clothing and gear to minimize contact with the skin.