Which would be an effective barrier against subterranean termite infestations?

A stainless steel mesh termite shield serves as an effective barrier against subterranean termite infestations due to its physical properties. Termites are unable to penetrate this tough material, which provides a robust defense against their invasion. The mesh structure allows for a continuous barrier that can be installed at critical locations, such as around foundations and utility penetrations, preventing termites from accessing the building's structure.

Other materials or methods, such as plastic sheeting or wooden planks, are not as effective. Plastic sheeting can be useful as a temporary moisture barrier but does not provide a physical deterrent to termites, while wooden planks are not suitable for protection as they are a food source for termites. Concrete barriers, while durable, may still have vulnerabilities if not properly installed or if there are cracks that can be exploited by termites. In contrast, the properties of a stainless steel mesh termite shield make it a reliable and long-lasting solution for termite prevention.