Structural Pest Control Applicator Practice Exam

Through which routes of entry are you likely to be exposed during pesticide mixing?

1. Dermal and swallowing

2. Inhalation and dermal

3. Swallowing and inhalation

4. Ingestion and dermal

The correct answer is: Inhalation and dermal

During pesticide mixing, the most common routes of entry for exposure to pesticides are inhalation and dermal contact. When mixing pesticides, the potential for inhalation occurs primarily due to the release of aerosolized particles or vapors that can be formed when pouring, mixing, or agitating the pesticide. Inhalation is a significant concern because it can lead to rapid absorption of chemicals directly into the bloodstream through the lungs, posing immediate health risks. Dermal exposure is also a major risk during this process, as pesticides can easily come in contact with the skin. Skin contact can occur through splashes, spills, or handling of contaminated equipment or surfaces. Certain pesticides can penetrate the skin, which significantly increases the systemic absorption of these chemicals. While ingestion and dermal contact might seem plausible, ingestion is less likely during the mixing process unless there are specific actions taken that lead to swallowing, such as not following safety protocols. The routes of entry related to dermal and inhalation provide a clearer picture of the possible exposure methods that are prevalent in occupational settings involving pesticide application.