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

The primary purpose of the signal word on a pesticide label is to indicate the product's relative acute toxicity to humans and animals. Signal words are standardized terms that convey the level of danger associated with the pesticide's ingredients, allowing users to quickly assess how hazardous the product may be. These words typically fall into categories such as "Caution," "Warning," and "Danger," which help inform users about necessary precautions and safe handling practices.

Understanding the toxicity level is crucial for ensuring the safety of applicators, bystanders, and the environment. It directly influences decisions regarding the use of personal protective equipment, application methods, and appropriate safety measures to take during handling. Knowing the toxicity level assists users in making informed choices about whether a product is suitable for the intended use considering their individual circumstances, such as experience level and environmental conditions.

Other options may contain important information regarding pesticide usage, but they do not serve the primary purpose of providing a quick and essential safety indication like the signal word does.