EPA’s Registered Antimicrobial Products Effective Against Clostridioides difficile (C. diff) Spores [List K]

• Disinfectant Products for Claims Against Clostridioides difficile spores
• Products on EPA’s Registered Antimicrobial Products Effective Against Clostridioides difficile (C. diff) Spores [List K]
• How to Use Products on this List Effectively
• How to Check if a Product is on EPA’s Registered Antimicrobial Products Effective Against Clostridioides difficile (C. diff) Spores [List K]
• Additional Information

Disinfectant Products for Claims Against Clostridioides difficile spores

EPA has reviewed required laboratory testing data demonstrating that these products kill Clostridioides difficile (C. diff) spores.

Products on EPA’s Registered Antimicrobial Products Effective Against Clostridioides difficile (C. diff) Spores [List K]

• Clostridioides difficile (C. diff) is a spore forming bacteria that can cause diarrhea and colitis. The products on the list below will kill C. diff.
• This organism is spread via fecal oral transmission.
• Please see CDC’s website for more information.

How to Use Products on this List Effectively

A product’s effectiveness can change depending on how you use it. Disinfectants may have different directions for different pathogens. Follow the label directions for Clostridioides difficile (C. diff) carefully including the contact time.

• The contact time is the time the product must be applied to the surface for it to be effective.

How to Check if a Product is on EPA’s Registered Antimicrobial Products Effective Against Clostridioides difficile (C. diff) Spores [List K]

• First, find the EPA registration number on the product label. Look for “EPA Reg. No.” followed by two, as described on the List Landing Page.
• Supplemental distributer products are not included in the lists. For example, if EPA Reg. No. 12345-12 is on the lists, you can buy EPA Reg. No. 12345-12-2567 and know you’re getting an equivalent product.
• On the product list, search the registration number exactly as it appears on the label.
• Once you see the results on the product list, make sure to check that the product's label includes directions for use as a disinfectant product against Clostridioides difficile under Use Directions for Disinfection.
  • Regardless of whether you are using a primary registration product or a supplemental distributor product, always check the label has the corresponding directions for use for the relevant pathogen.

Additional Information

• Disinfectants List General Information
• EPA Product Performance Test Guideline for Disinfectants
• CDC - Clostridioides difficile Infection Fact Sheet