Why is ozone not recommended for structural remediation?

Ozone is not recommended for structural remediation primarily because it is toxic to humans and pets, posing significant health risks during and after treatment. While ozone can be effective in killing certain types of bacteria and mold spores, its use can often lead to unsafe conditions for inhabitants of a building. The toxicity of ozone means that professionals must take special precautions to ensure that all occupants are safely removed from the area during treatment, complicating the remediation process.

Furthermore, ozone's effectiveness against contaminated materials can be limited. Many porous materials, such as wood and drywall, do not allow ozone to penetrate effectively, which can result in incomplete remediation of the pathogens and allergens present. This limitation can lead to persistent contamination issues even after ozone treatment has occurred, making it an unreliable choice for comprehensive microbial remediation.

Considering these factors, the other options address aspects of ozone use but do not capture the critical issue of its toxicity and insufficient efficacy on contaminated materials, which fundamentally limits its applicative viability in structural remediation.