What term refers to a pesticide that kills pests on contact and forms a protective coating on foliage?

• A. Contact pesticide
• B. Containment system
• C. Carrier
• D. Cone-Spray nozzle

Answer: (A)

A pesticide that kills pests on contact and leaves a protective film on foliage is described by the action type “contact pesticide.” This means the product works when the pest touches it, rather than needing to be taken up by the plant or ingested. As it dries on the leaf, it can form a thin film that continues to act as a barrier, helping prevent further pest arrivals and providing ongoing surface protection. The other options aren’t about how the product acts on pests: a containment system is about managing pests, not killing them; a carrier is just the inert substance that carries the active ingredient; a Cone-Spray nozzle is equipment used to apply pesticides.