Which statement regarding intermediate-level disinfectants is incorrect?

Intermediate-level disinfectants are specifically designed for their effectiveness against a range of pathogens, including Mycobacterium tuberculosis, which is a strong indicator of their efficiency in infection control. This efficacy is why they are often referred to as "tuberculocidal hospital disinfectants" — they meet the labeling requirements that affirm their ability to kill such resilient microorganisms that are commonly associated with infections in healthcare settings.

When it comes to sporicidal activity, it's important to note that while some intermediate-level disinfectants possess this attribute, sodium hypochlorite is not typically classified as having sporicidal activity at dilution levels commonly used in practice. Thus, this provides a nuanced understanding of their varied effectiveness.

The regulation of disinfectants is multifaceted. While some disinfectant products are indeed regulated by the FDA, others may fall under the jurisdiction of the Environmental Protection Agency (EPA). Therefore, stating that they are exclusively regulated by the FDA is inaccurate. Understanding this aspect is crucial because it highlights the complexity of disinfectant approval and usage standards.