* Through spot cleaning using the Kärcher steam cleaner, i.e. steaming for 30 seconds on the maximum steam setting in direct contact with the surface to be cleaned, 99.999% of enveloped viruses such as influenza viruses (except the hepatitis B virus) can be eliminated on most smooth, hard surfaces in the house (test germ: modified vaccinia Ankara virus).** When cleaning at a cleaning speed of 30 cm/s using the maximum steam setting and with direct contact with the surface to be cleaned, 99.99% of all common household bacteria on common smooth, hard household surfaces are killed (test germs: Enterococcus hirae).