Which of the following is not a signal word found on pesticide labels?

The correct choice is "Attention," as it is not a signal word found on pesticide labels. Signal words serve as important indicators of the toxicity level of the pesticide to ensure safe handling and application.

The commonly recognized signal words used on pesticide labels include "Caution," "Warning," and "Danger: Poison." Each of these terms serves a specific purpose:

• "Caution" indicates a relatively low level of toxicity.

• "Warning" suggests a higher level of toxicity than Caution but not as severe as Danger.

• "Danger: Poison" signifies the highest level of toxicity, often associated with products that can cause severe harm or even death if mishandled.

By using a standard set of signal words, pesticide labels effectively communicate essential safety information to users, helping them to understand the potential risks associated with the product.