The recall affects poke sold on Sept. 18, 2025, with a sell-by date of Sept. 22, 2025. The tuna was packaged in clear plastic clamshell containers under Costco's Kirkland Signature label with item number 17193. Customers are urged not to eat the product, to dispose of it, and to visit Costco for a full refund. The recall was launched after the supplier reported a positive listeria test result on Sept. 17. The affected product was sold in Costco warehouses across a wide swath of the country, including major markets in New York, Texas, Florida, California, and Washington.