What signal word is used for substances that are highly toxic?

The signal word "DANGER" (often accompanied by the term "poison") is used to denote substances that are highly toxic. This classification is important because it alerts users to the extreme risk associated with the use of the pesticide or chemical. When the word "DANGER" is present on a pesticide label, it indicates that even small quantities can lead to severe health effects or fatalities if proper safety measures are not taken.

This terminology helps ensure that applicators handle these substances with the utmost care and are aware of the potential hazards involved. The use of "DANGER" emphasizes the need for protective equipment and strict adherence to safety protocols when working with such highly toxic materials. Understanding the significance of signal words like "DANGER" is crucial for anyone involved in the application of pesticides, as it guides proper handling and emergency response.