During the winter and the season of the virus, you will significantly reduce your risk of infection by using disinfectants. They will remove the virus from your hands or the various surfaces we often touch, reducing the spread of the infection. Disinfectants work thanks to the active substances contained in them, and the most common that Croatian Institute of Public Health also recommends are disinfectants with hydrogen peroxide, alcohol or benzalkonium chloride. Through today’s text we will introduce you to the active substances in disinfectants, and which species is best for use in the age of the SARS-CoV-2 virus.