The U.S. Environmental Protection Agency, Region 9 (EPA) is informing the Bureau of Customs and Border Protection of the U.S. Department of Homeland Security (CBP) that the following pesticide device import products in the shipment of Duet 2.0 Air Purifiers should be Denied Entry-Refused Delivery into the United States pursuant to the authority of Section 17(c) of the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), 7 U.S.C. Section 136o(c), and the implementing regulations at 19 C.F.R. Section 12.114. The importer did not provide a Notice of Arrival (NOA) or an electronic alternative to the NOA in the Automated Commercial Environment (ACE) with this pesticide device in accordance with 19 C.F.R. Section 12.112. The entry was marked Refused in ACE.