Efficacy of a Disinfectant or Sterilant Applied to a Room Via a Fogger or Misting Device

Test Purpose

The U.S. EPA requires label claims associated with fogging, misting, vaporizing disinfectant or sterilant product applications be substantiated by appropriate test data. These test methods may be used to generate custom protocols and test assays to evaluate and substantiate these products for sterilization or disinfection.

Test Summary

In this method, a series of glass or stainless steel surfaces inoculated with the test organism (commonly Geobacillus stearothermophilus, Clostridium difficile, Staphylococcus aureus or Pseudomonas aeruginosa) are placed at specific locations inside a customized testing room. The room is sealed, the fogging, misting or vaporizing product is allowed to treat the room and following treatment, the surfaces are removed and evaluated for survivors. Performance criteria for these claims are not formally established however acceptable results are commonly based on existing performance criteria associated with the disinfection or sterilization claim of interest.