What term describes the method of using chemical barriers in pest control?

The method of using chemical barriers in pest control is best described by the term "preventative measures." This term encompasses strategies that aim to stop pests from entering or affecting a property before they can cause harm. By employing chemical barriers, pest control professionals create a zone that pests are less likely to cross, thus preventing infestations.

Preventative measures are crucial in integrated pest management because they not only protect the area from current pest populations but also reduce the likelihood of future infestations. This proactive approach helps maintain a pest-free environment with minimal impact on the surrounding ecosystem.

The other options focus on different aspects of pest control. For example, the application of growth regulators is more about controlling the life cycle of pests rather than creating barriers. Thermal fogging is a method used for applying pesticides but does not inherently involve the creation of chemical barriers. Remedial techniques generally refer to actions taken to eliminate existing pest problems rather than preventing them in the first place. Thus, "preventative measures" accurately captures the essence of using chemical barriers in pest management.