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EPA Seeks Comment on Its Interim Guidance on Residual Efficacy Claims
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By Barbara A. Christianson

On October 26, 2020, the U.S. Environmental Protection Agency (EPA) announced that it is soliciting public comment on the interim guidance on registering products that claim to have “residual” or “long-lasting” effectiveness against viruses.  This announcement follows up on EPA’s October 14, 2020, announcement that it would begin expediting its review of products with residual efficacy intended for use against SARS-CoV-2, the coronavirus that causes COVID-19.  While traditional disinfectants only kill viruses and bacteria that are on the surface at the time they are used, surfaces treated with residual antimicrobial products kill pathogens that come into contact with the surface days, weeks, or years after the product is applied.

EPA announced in an October 26, 2020, memorandum that it is seeking feedback from the public on the expedited process, design elements for evaluating residual product claims, and the test methods associated with this initiative. 

All comments on the interim guidance must be submitted to Docket Number EPA-HQ-OPP-2020-0529 on or before January 4, 2021. 

The interim guidance documents -- Interim Method for Evaluating the Efficacy of Antimicrobial Surface Coatings, Interim Guidance - Expedited Review for Products Adding Residual Efficacy Claims, and Interim Method for the Evaluation of Bacterial Activity of Hard, Non-Porous Copper-Containing Surface Products -- are available in Docket Number EPA-HQ-OPP-2020-0529.  More information on the interim guidance is available on our blog.