What is an active ingredient?

What is an active ingredient?

• A. Inert filler
• B. Chemical that kills pest
• C. Carrier
• D. Solvent

Answer: (B)

The key idea is that the active ingredient is the part of a pesticide that actually provides the pesticidal effect. It’s the chemical that kills or controls the target pest. The other components—solvents, carriers, emulsifiers, adjuvants—are inert ingredients that help apply or stabilize the product but don’t contribute to pest kill. So the correct way to describe it is: the chemical that kills the pest. For example, in a product where permethrin is used as the active ingredient, permethrin is what does the pest-killing work, while the solvents and carriers just help deliver it. Some products may have more than one active ingredient, but each active ingredient is the component responsible for the pesticidal action.

The key idea is that the active ingredient is the part of a pesticide that actually provides the pesticidal effect. It’s the chemical that kills or controls the target pest. The other components—solvents, carriers, emulsifiers, adjuvants—are inert ingredients that help apply or stabilize the product but don’t contribute to pest kill. So the correct way to describe it is: the chemical that kills the pest. For example, in a product where permethrin is used as the active ingredient, permethrin is what does the pest-killing work, while the solvents and carriers just help deliver it. Some products may have more than one active ingredient, but each active ingredient is the component responsible for the pesticidal action.