Whenever it’s feasible, it’s best to hire a reputable third party to perform facility cleaning and disinfection services. However, if it will be necessary for you or someone else from your company to perform the cleaning and disinfection service, the following guidelines may help protect that person from exposure to COVID-19. The best way to help protect yourself and others is to have all surfaces that may have been contaminated cleaned and disinfected. Cleaning refers to the removal of dirt and impurities. Disinfecting refers to the use of chemicals to kill the virus.