Which of the following signal words indicates the highest level of toxicity on a pesticide label?

The signal word "Danger" on a pesticide label indicates the highest level of toxicity. This classification is part of an established system used to quickly convey the level of risk associated with a pesticide.

When consumers or applicators see "Danger,” it alerts them that the product poses a serious risk and that even minimal exposure could lead to significant harm or adverse effects. This may include acute toxicity, where immediate medical intervention may be necessary in case of exposure.

In contrast, the other terms convey lower levels of toxicity. "Caution" suggests a relatively low level of toxicity, while "Warning" signifies a moderate level of risk, indicating more caution is needed than with "Caution" but less than with "Danger." The term "Notice" isn't a standard signal word used in this context and typically refers to information rather than risk level.

Thus, "Danger" is specifically designed to communicate the highest level of toxicity to protect users and ensure they take appropriate precautions when handling such hazardous materials.