Which of the following is a common method of mechanical pest control?

• A. Applying chemical pesticides
• B. Using traps or physical barriers
• C. Introducing beneficial insects
• D. Utilizing pheromone lures

Answer: (B)

Mechanical pest control methods involve the use of physical means to manage pest populations without the use of chemicals. Using traps or physical barriers is a primary example of this approach. Traps are designed to capture or kill pests directly, while physical barriers, such as nets or screens, prevent pests from accessing certain areas where they might cause damage or infestation. This method is eco-friendly, as it reduces dependency on chemical treatments and minimizes potential harm to non-target organisms and the environment.

In contrast, applying chemical pesticides relies on chemical formulations to kill or repel pests, which does not fall under mechanical control. Introducing beneficial insects involves augmenting or releasing natural predators or parasites to manage pest populations, which is more aligned with biological pest control strategies. Utilizing pheromone lures leverages chemical signaling to attract pests for monitoring or trapping, thus also being outside the realm of mechanical control.