Can everyone stand one more posting on this after Len Hambleton's reply? I forwarded the original enquiry to Monona Rossol, Industrial Hygienist and President of Arts, Crafts and Theater Safety (ACTS). Her direct response to me (which I only picked up today) was "there's not much to do but use effective sterilants and the only simplke and sure one is bleach. If this is bad for the artifactm there ther are some *nuke* strategies". I recommend that anyone asking about the *nuke* strategies, contact her directly ([log in to unmask]). Monona also said that next month, ACTS will be launching a website. We'll try to get the address out as soon as it is launched so that these types of questions can be also vetted by professional safety personnel. Wendy Claire Jessup President and Conservator Wendy Jessup and Associates, Inc. 210 Little Falls St. Suite 203 Falls Church, VA 22046 (703) 532-0788 (703) 532-1661 (fax)