What is the most common use for quaternary ammonium compounds?

Quaternary ammonium compounds, commonly known as quats, are widely recognized for their effectiveness as chemical sanitizers, particularly in food service and hospitality environments. They are formulated to kill a broad spectrum of microorganisms, including bacteria and viruses, making them a crucial tool for ensuring food safety and hygiene in restaurants like Whataburger.

The use of quats is specifically important in sanitizing surfaces, utensils, and equipment in kitchens, as they can eliminate pathogens that could lead to foodborne illnesses. This sanitizing action is not only swift but also leaves a residual effect that continues to work against microbial growth for a period after application, which is particularly beneficial in high-traffic areas.

Other uses of quats exist, but their primary role in the context of food safety and in the restaurant industry is as sanitizers. Therefore, their classification as chemical sanitizers is what makes this choice the most appropriate.