Which of the following practices is an example of physical pest control?

Using barriers to block pest entry is an excellent example of physical pest control. This method involves implementing physical means to prevent pests from accessing certain areas, thereby directly reducing their presence and impact without the use of chemicals. Barriers can include materials like nets, screens, or even physical structures like walls or fences that limit the movement of pests.

While traps for capturing rodents is also a form of physical control, it deals with managing existing pest populations rather than preventing infestations. Other options involve chemical methods or biological controls, which do not fit within the framework of physical pest control. Understanding this distinction helps reinforce the value of non-chemical methods for managing pest issues in a more sustainable manner.