When it comes to cleaning and sanitizing areas where there have been confirmed or suspected cases of COVID-19, the Centers for Disease Control and Prevention recommends specific actions, according to an article from Facilities Maintenance Decisions on the FacilitiesNet website.

At a facility that houses people overnight:

• Open outside doors and windows, and use ventilating fans to increase air circulation in the area. Wait 24 hours or as long as practical before beginning cleaning and disinfection.
• Focus on cleaning and disinfecting common areas where staff and others providing services might come into contact with ill persons.
• Continue routine cleaning and disinfection as in this guidance in areas ill persons have visited or used. If more than seven days have elapsed since the person with suspected or confirmed COVID-19 visited or used the facility, additional cleaning and disinfection is not necessary. 

Read the article.