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The selection of quaternary ammonium compounds (quats) as an example of a chemical method of sanitation is appropriate because these compounds are specifically designed for disinfection and sanitization processes. Quats work by disrupting the cell membranes of bacteria and other pathogens, effectively killing them and preventing the spread of infection.
Quaternary ammonium compounds are commonly used in various settings including salons and spas due to their effectiveness against a broad range of microbes, ease of use, and relatively low toxicity in comparison to some other chemical sanitizers. They are also known for leaving a residual effect, which can provide ongoing antimicrobial activity on treated surfaces.
While bleach and hydrogen peroxide are indeed chemical sanitizers, they have different applications and considerations, such as potential damage to surfaces and being harsher on the skin. Soap and water, on the other hand, is primarily a physical method of sanitation, using mechanical action to remove dirt and germs rather than killing them chemically. Thus, quats are a clear representation of a specialized chemical method of sanitation widely recognized in the cosmetology industry.