Cleaning and disinfection are critical in controlling COVID-19, or other viruses and bacteria in healthcare and non-healthcare facilities. Cleaning is the first step of the disinfection process; this is done using mechanical action such as scrubbing or friction with the use of water and soap to remove and reduce microbial load. Sanitizers and disinfectants are then applied to kill any remaining microorganisms. But how can you rapidly verify if your disinfection or sanitization is effective in the inactivation or removal of bacterial microorganisms?