What is considered a biological control method for termites?

Biological control methods for termites involve using natural organisms to manage pest populations rather than relying on chemical treatments. Introducing fungi and bacteria into the colony is considered a biological control method because it utilizes the natural diseases and pathogens that can reduce termite populations. Certain fungi, for example, can infect and kill termites, providing a sustainable and eco-friendly alternative to synthetic pesticides. This method leverages the natural interactions within ecosystems to achieve pest control, promoting a balanced approach to managing termite infestations while minimizing environmental impact.

The other options represent different control strategies that do not fall under the category of biological methods. Synthetic pesticides involve chemical applications to exterminate pests, which contrasts with biological methods that use living organisms. Trapping with physical barriers is a mechanical approach that physically prevents termites from accessing structures rather than relying on biological interactions. Applying heat treatment relies on raising temperatures to lethal levels for termites without any biological agents involved. Therefore, introducing fungi and bacteria is distinct because it aligns with the principles of biological pest control.