What is the purpose of the signal word on a pesticide label?

The signal word on a pesticide label is specifically designated to indicate the product's relative acute toxicity to humans and animals. This system is part of the labeling requirements established by regulatory agencies and serves to quickly communicate the level of hazard associated with the pesticide.

For instance, common signal words include "Caution," "Warning," and "Danger," which correspond to different toxicity levels. "Danger" indicates a high degree of toxicity and potential for severe injury or death upon exposure, while "Caution" suggests a lower level of toxicity. This immediate visual cue helps consumers, applicators, and safety personnel make informed decisions regarding the safe handling and application of the pesticide, ensuring that they are aware of the risks involved.

In this context, other aspects of the label do provide important safety information, such as personal protective equipment (PPE) recommendations or first aid measures for exposure, but the primary role of the signal word focuses on communicating toxicity levels. Environmental hazards are also critical, but these are typically addressed separately in the label's sections rather than through the signal word.