“Viruses can linger on surfaces, from café counters to water fountains to bathroom sinks, and coronavirus is no exception. For instance, preliminary research published in the New England Journal of Medicine in April, suggests viable coronavirus can stay on plastic and stainless steel for 72 hours, cardboard for 24 hours, and copper for four hours.”2019-ncov-factsheet CDC
How long will covid remain on a surface? Could be days depending on the surface – but we don’t know for sure. Some virus remnants could remain and be dangerous even after days. http://www.progressive-charlestown.com/2020/05/we-still-dont-know-how-long-covid-19.html. “The Centers for Disease Control and Prevention says it may be possible for people to contract Covid-19 by touching contaminated surfaces or objects and then touching their mouth, nose, or even eyes,….” (fact sheet)
Now SaniZap® machines are available for the MightySteam® use to sanitize surfaces.