Describe the "signal words" used on pesticide labels.

The choice regarding signal words is significant as these terms are specifically included on pesticide labels to convey crucial information about the toxicity of the product. Signal words such as "Caution," "Warning," and "Danger" are used to indicate the potential risks associated with the pesticide and help users understand the necessary safety precautions they must take when handling and applying the substance.

By categorizing pesticide products into different levels of toxicity, these words guide users on the appropriate personal protective equipment needed, potential health risks, and emergency measures to take in case of exposure. This system is essential in promoting safe usage and minimizing risks to both human health and the environment, thus making it a key feature of pesticide labeling that reinforces responsible practices among applicators.