Testing the effectiveness of disinfectants on surfaces can be costly, particularly in the UK, where lab tests are expensive. In the U.S., options include germicide cleaning kits designed for public spaces, which can be used before testing. It's essential to understand that testing often requires culturing samples, which may necessitate various culture media depending on the microorganisms of interest. Local health departments can provide guidance on certified laboratories and testing options. The effectiveness of disinfectants is influenced by factors such as concentration, surface type, organic matter presence, exposure duration, and temperature. While testing can yield insights, it's important to recognize that many microbes are persistent, and some cannot be cultured. Existing research on disinfectant efficacy may also offer valuable information.