Is there any updated scientific evidence about how long the virus can stay on a surface (ie. metal handrails, plastic handles, clothing, etc.)? For example you hear people saying “well if it sits for 2-3 days it’ll be fine”

There are a number of studies relating to this. The key takeaway, however, is that as long as there are no known COVID-19 positive employees, transmission from surfaces is very low risk. If an employee tests positive for COVID-19, all related areas and surfaces need to be disinfected.