What is a signal word on a pesticide label used for?

A signal word on a pesticide label serves a critical function in communicating the toxicity level of the pesticide to users. These words, such as "Caution," "Warning," and "Danger," provide immediate insight into the relative hazard posed by the product. By understanding these terms, users can better assess the risks associated with handling and applying the pesticide, ensuring they take appropriate safety measures.

For instance, a product labeled with "Danger" indicates a high level of toxicity, while "Caution" suggests a lower risk. This classification helps inform users about the necessary precautions they should take, such as using personal protective equipment or following specific application guidelines.

In contrast, the other options focus on aspects not directly related to the primary purpose of the signal word. The cost of the pesticide, storage requirements, and marketing information have their own place in the label but do not pertain to conveying toxicity levels. Understanding these distinctions is essential for safe and effective pesticide use.