On August 27, 2013, the U.S. Environmental Protection Agency (EPA) announced its proposed decision to register “Nanosilva,” a nanosilver-containing antimicrobial pesticide product. According to EPA, Nanosilva is a silver-based product “used as a non-food-contact preservative to protect plastics and textiles (e.g., in household items, electronics, sports gear, hospital equipment, bathroom fixtures and accessories) from odor and stain causing bacteria, fungi, mold and mildew.” EPA states that it evaluated exposure to nanosilver from Nanosilva “using data showing that plastics and textiles treated with the product released, at most, exceedingly small amounts of silver.” EPA also reviewed other information submitted by the applicant and used data from the scientific literature to evaluate the hazard of nanosilver. Based on its evaluation, EPA determined that Nanosilva “will not cause unreasonable adverse effects on people, including children, or the environment.” As a condition of registration, EPA is requiring the company to generate additional data. Comments on the proposed decision are due September 26, 2013. More information, including the Proposed Decision Memo, is available in the online docket.