Which treatment method is recommended for areas with subslab heating ducts?

Baiting is a preferred treatment method for areas with subslab heating ducts because it effectively allows for targeted control of wood-destroying pests, such as termites, without disrupting the ductwork or other structural components. This method involves placing bait stations strategically around the area to attract and poison the pests.

When dealing with subslab heating ducts, it is crucial to avoid methods that might cause undue disturbance to the duct system or the surrounding materials. Baiting minimizes the risk of damage to the infrastructure, while allowing for continuous monitoring and management of pest activity. It also helps to eliminate pests effectively from their colonies, as foraging workers will carry the bait back to the nest, leading to a more comprehensive treatment outcome.

Other methods, such as spraying or sealing, could potentially interfere with the functioning of the heating ducts or fail to penetrate areas where pests are nesting, especially in subslab environments. Trapping is typically less comprehensive and may not adequately address large infestations or prevent return behaviors. Thus, baiting stands out as the most efficient and least invasive approach in this scenario.