What type of surfaces are quaternary ammonium compounds effective disinfectants for?

Quaternary ammonium compounds, commonly referred to as quats, are effective disinfectants primarily for nonporous surfaces. The reason they work well on nonporous materials is that the chemical structure of quats allows them to adhere easily to and penetrate the surfaces of items like metal, glass, and plastic, where they can effectively eliminate a wide range of pathogens.

On nonporous surfaces, quats form a protective layer that helps prevent the growth of bacteria and other microorganisms, making these disinfectants particularly valuable in environments like barber shops and salons, where maintaining strict hygiene is essential.

While some disinfectants can be used on porous materials, quaternary ammonium compounds do not have the desired level of efficacy on porous surfaces such as fabrics and untreated wood, because their action is greatly reduced when they come into contact with materials that can absorb liquids. This is why it is essential to use quats primarily on nonporous surfaces to ensure effective disinfection.