Which gas is commonly used in structural fumigations?

Structural fumigations primarily utilize sulfuryl fluoride as the gas of choice. This compound is effective against a wide range of wood-destroying pests, including termites and other structural insects. Its properties allow it to penetrate materials effectively, ensuring thorough treatment of infested areas.

In contrast, phosphine is used in some fumigation contexts, particularly in stored grain facilities, but it is not as commonly employed in structural fumigation as sulfuryl fluoride. Chlorpyrifos and DDT are pesticides and not gases used in fumigation. Chlorpyrifos is primarily an insecticide and while it may be used in preventative pest control, it does not play a role in structural fumigation like sulfuryl fluoride does. DDT, while historically known for its effectiveness, has been largely restricted due to environmental and health concerns, making it unsuitable for current fumigation practices. Thus, sulfuryl fluoride stands out as the most appropriate choice for structural fumigations targeting wood-destroying organisms.