Many thanks to all for help with this query - and we will let you know what we learn. The house where these have been found is an exhibition site, brick structure with some moisture problems. Now we are deciding how many (of what sound like "indicator" pests) are too many. I certainly don't consider this a situation where we would treat in response to the pest. Of course we are always working on correcting moisture problems. Many of our collections "objects" are buildings. Patty
Patricia Silence Conservator of Museum Exhibitions and Historic Interiors The Colonial Williamsburg Foundation
