What is one of the main purposes of sealing a fumigation structure?

The primary purpose of sealing a fumigation structure is to contain the fumigant effectively. When a structure is sealed properly, it minimizes the escape of the gas, ensuring that the fumigation process is more efficient and effective. This containment is crucial because it allows the fumigant to remain concentrated in the area where it is needed to control pests, thereby enhancing its efficacy and reducing the risk of exposure to non-target organisms or the environment.

Effective sealing also helps in maintaining the necessary levels of concentration required for different periods during the fumigation process. It ensures that the fumigant can perform its role without dilution from external air or loss through existing gaps or leaks in the structure. This is critical for compliance with safety regulations and for achieving successful pest management outcomes.

While other options discuss aspects that may have some peripheral relevance to building integrity or safety, they do not address the core objective of fumigation sealing, which is to effectively contain the fumigant.