What is the key characteristic of disinfectants?

The key characteristic of disinfectants is their ability to kill or inactivate disease-producing microorganisms. Disinfectants are formulated to effectively reduce or eliminate pathogenic bacteria, viruses, and fungi on surfaces, making them essential for maintaining hygiene and preventing the spread of infections. This action is particularly crucial in environments like healthcare facilities, food processing areas, and other public spaces where the risk of disease transmission is heightened.

While disinfectants can be present in various settings, they are not limited to hospitals or agricultural use; hence, the other options do not accurately describe the primary purpose of disinfectants or provide a comprehensive understanding of their role in sanitation practices.