Using insecticides is self-defeating because insects evolve resistance to them.

Evidence

In her defense, Carson explained that she had never advocated a total ban of chemical pesticides, including their use to control insect-borne diseases: “I do not favor turning nature over to insects” (Rachel Carson, 1964). Rather, she objected to indiscriminate blanket spraying of pesticides and encouraged ecologically safer methods of insect control. She believed that with safer methods, human interests could be served without inflicting needless harm on the natural environment. … With overuse or misuse of chemical agents, insects evolve resistance to them, rending those agents ineffective. Excessive use of the insecticide DDT is a good case in point. Carson (1962) expressed concern “that the insect enemy has been made actually stronger by our efforts. Even worse, we may have destroyed our very means of fighting.” — Albert Bandura, Moral Disengagement, 2617

Categorization

• CANDY: The tidy paradox that Carson warned industry against: pest control strengthens pests — an easy conversation fact.
• corroborated: 2 independent passages support this claim — Albert Bandura, Moral Disengagement: How People Do Harm…, 2617