How much concentrate is estimated to be needed to potentially kill an average person in category 3?

The estimate that an ounce to a pint of a substance is potentially lethal to an average person in category 3 indicates a significant risk associated with higher toxicity levels. In the context of toxic substances, being classified in category 3 often implies that exposure to a substantial amount of the material could lead to moderate to fatal health effects.

This classification suggests that while smaller quantities might not be lethal, anything approaching an ounce up to a pint is substantial enough to be dangerous. Substances in this category typically require careful handling and application, reinforcing the need for pest control technicians to follow safety protocols when dealing with such materials. Thus, an ounce to a pint represents a range that aligns with the level of toxicity considered serious enough to harm or kill an average person.

In contrast, smaller amounts or excessive quantities beyond a quart could lead to different interpretations of potential danger or misuse, making the selected range the most fitting for category 3.