The part of the pesticide that kills is the

• A. Active ingredient
• B. Carrier
• C. Inert ingredient
• D. Adjuvant

Answer: (A)

The part that actually kills pests is the active ingredient. This is the chemical in the pesticide formulation that provides the pesticidal action, targeting and destroying or inhibiting the pest. The carrier is the medium that helps apply the product, such as water or oil. Inert ingredients are substances that don’t contribute to killing pests themselves, often serving as fillers or stabilizers. Adjuvants are additives that improve how well the product works—like helping it spread, stick, or penetrate—without being the component that kills the pest.