Growth regulators in pest control are pesticides that do what?

• A. They deter pests
• B. They kill pests
• C. Pesticides that alter pests to prevent them from developing into damaging stages
• D. They sterilize pests

Answer: (C)

Growth regulators in pest control work by interfering with the pest’s development, altering its normal growth so it cannot reach the life stage that causes damage. Many of these products mimic or disrupt hormonal signals (like juvenile hormone) or inhibit processes needed for molting and metamorphosis, so immature insects fail to mature into damaging adults or fail to reproduce. Because the primary effect is developmental disruption rather than immediate killing, they reduce damage by preventing pests from becoming harmful stages rather than killing them outright. They are not simply deterrents, and they are not sterilizers; those are different modes of action.