Product has passed ISO 22196 testing Manufactured with an Antimicrobial additive which fights bacteria growth on the product’s surface. Neutralizes over 99% of active bacteria on product's surface. Additive doesn’t wear off and remains effective for the life of the product   "Antimicrobial" molded into the back side of the product Antimicrobial products each have an EPA registered antimicrobial agent incorporated into the plastic that protects the item itself by suppressing growth of bacteria. The antimicrobial properties do not protect users or others against bacteria, viruses, germs or other disease organisms. For more information on U.S. regulations on antimicrobial agents and treated products, visit www.epa.gov