[Michlib-l] how long before "Long overdue: lost" gets removed from catalog?

We are working to establish consistent procedures with our catalog maintenance, and I'd like some input on how long to wait before removing a long overdue item from the catalog. Six months? A year? Thanks, Kristy Kristy Zeluff, Children's Librarian Vicksburg District Library 269-649-1648 kzeluff@vicksburglibrary.org