Disinfectant Concentrations, Contact Times, and Use Settings for EPA's List of Products Effective against Clostridioides difficile (List K)

On November 21, 2022, the US Environmental Protection Agency (EPA) updated its List K: Antimicrobial Products Registered with EPA for Claims Against Clostridium difficile Spores. (The US Centers for Disease Control and Prevention CDC now refers to Clostridium difficileas Clostridioides difficileC. diff, but EPA's list reflects the earlier name.)

Manufacturers of reusable, noncritical medical devices and equipment may recommend the use of certain generic disinfectants (e.g., sodium hypochlorite) at certain concentrations. But List K does...