Zip tags from Easy RFID Pro, Poughquag, N.Y., attach to milk crates, linen bags, all ware washing racks or just about anything that a zip tie could attach to, the company says. The tags are available with three options: blank, custom print or with predetermined text. The printed tags are laser engraved, which allows for years of usage without fading. The waterproof tags are safe for ware washing machines. The tags are embedded with RFID technology, making them compatible with the Easy RFID Pro system.