What is the primary function of signal words on pesticide labels?

The primary function of signal words on pesticide labels is to reflect the toxicity level of the product. Signal words serve as a quick reference for users, indicating the potential hazard associated with the pesticide. They help convey essential safety information by categorizing products into different levels of toxicity. For example, signal words like "Caution," "Warning," and "Danger" are used to inform users about the severity of the risk they might face when handling, applying, or being exposed to the pesticide.

The understanding of these signal words is crucial for safe pesticide use. It allows applicators to take the necessary precautions, such as wearing appropriate personal protective equipment or following specific safety protocols, depending on the toxicity level indicated. By providing this clear and immediate information, signal words play a vital role in promoting safety in pesticide application practices.