Other fungi have similar procreative abilities and release spores at different times of the day and season depending upon maturity, temperature and moisture. All fungi and bacteria are not evil. We could not live without the various microbes that help us digest our food and break down organic materials. But some microorganisms such as stacybotrys, alternaria, cladosporium and aspergillus, can be downright dangerous. The crew wears Tyvek suits and power air-purified respirators, goggles and gloves.
Professional remediation is very expensive.
Procedures include pretreatment with an antimicrobial, tear out, double bagging of debris, scrubbing down with antimicrobials, and encapsulation. After reading about the clean-up procedure, you are probably thinking the area must have been attacked by a malicious foreign power using insidious bacteriological weapons. One emergency job Riegel discussed at the seminar was caused by a leaky shower valve behind the bathroom wall. Contamination was so bad it was considered an emergency. Although commercial buildings have a better chance than residential of getting coverage, the outlook is not good.