Dear Susan, The Getty has done extensive research in using anoxic environments to control insect pests. They offer a free PDF download of a publication entitled "Inert Gasses in the Control of Museum Insect Pests" that you may find useful on the following page: http://www.getty.edu/conservation/publications/pdf_publications/books.html Hope this helps. Sincerely, David Ryan Registrar Colorado Springs Pioneers Museum www.cspm.org ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).