What is the term for the amount of pesticide that remains on surfaces after application?

What is the term for the amount of pesticide that remains on surfaces after application?

• A. Residue
• B. Exposure
• C. Hazard
• D. Persistence

Answer: (A)

Residue is the amount of pesticide that remains on surfaces after application. This concept matters because those leftover amounts can be a source of exposure to workers or others who touch or come into contact with treated surfaces, or who contaminate clothing, tools, or food-contact items. It’s distinct from exposure, which is the actual contact dose someone receives; and from persistence, which describes how long the chemical stays active in the environment. Hazard refers to the potential for harm a substance poses, not the amount left behind, so residue specifically labels what remains on the surface after use. Labels and safety guidelines use residue information to set re-entry intervals and handling requirements to minimize exposure.

Residue is the amount of pesticide that remains on surfaces after application. This concept matters because those leftover amounts can be a source of exposure to workers or others who touch or come into contact with treated surfaces, or who contaminate clothing, tools, or food-contact items. It’s distinct from exposure, which is the actual contact dose someone receives; and from persistence, which describes how long the chemical stays active in the environment. Hazard refers to the potential for harm a substance poses, not the amount left behind, so residue specifically labels what remains on the surface after use. Labels and safety guidelines use residue information to set re-entry intervals and handling requirements to minimize exposure.