We use Sentricon and similar systems at a couple of our historic sites. Our installations have only been in place for between 6 and 24 months; therefore, we cannot substantiate or refute any claims. Our reasons for installing bait systems were very simple: tenting structures, which is what we do in Florida, is a structurally abusive procedure, even when done with great care. And many structures had become infested and thus been tented at least twice during the preceding 10 year period. Thus, the most recent infestation was the last straw Concerns for the integrity of historic buildings during the process are entirely separate from any concerns about Vikane - the fumigant of choice - reactions with artifact components. I hasten to add that if the structure is infested, your objects may also be infested. Please note, however, we had to tent infested structures and treat objects one more time before any Sentricon warranty could be offered. John Scafidi Florida State Parks Tallahassee, FL [log in to unmask] ========================================================= 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).