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It is worth noting that pest companies make their money through treatments and only deal with the 'symptoms' rather than the cause. It would be far more effective to find the source or sources of the infestation such as checking chimneys, voids and ducts for possible 'hot spots' like rodent and birds nests that may be the cause of re-infestation. If the source is not sought then there is a strong possibility of the problem occurring again even after the treatment has finished. Open air ducts and windows are also a source of entry for insect pest, and although air circulation is essential to avoid mould, maybe a fine mesh over any open gaps would provide sufficient protection against entry. Many fabrics are mixed fibres so it would be worth cleaning/treating the whole of the collection to ensure that all eggs and moths are removed, as it is not a museum collection this allows for a little flexibility in the treatment rather than adhering to strict museum guidelines for conservation purposes. The use of pheromones lures in sticky traps should also prove effective and possibly cheaper than an intensive repetitive treatment from a pest company. The most effective methods of pest control are prevention and good housekeeping. Regular checks of the costume and cleaning of the storage space will minimise the conditions that these pests thrive in. I hope this information helps or maybe sparks further thoughts towards a solution. Best of luck Miss Tanya Camberwell Heritage Collections Officer - SSDC Direct tel no. 01935 462859 >>> "Lisa Shockley" <[email protected]> 01/07/2009 21:44 >>> This is a message from the Pest Management Database List. To post to this list send it as an email to [email protected] To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Suggestion: Check the MSDS in detail. It sounds as if the collection is worn or has the possibility of being worn. If treated with such a residual pesticide, make certain it is safe for human contact for hours under very warm & moist (sweaty) conditions. If it is, I would be very much interested in knowing what the chemical is. Lisa Shockley, Curatorial Specialist, 3-D Collections Union Station/Kansas City Museum 30 W. Pershing Road Kansas City, MO 64108 816-460-2055 "Where there is Peace; there is Culture; Where there is Culture; there is Peace." Nicholas Roerich (1874-1947 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Cindy Gardner Sent: Wednesday, July 01, 2009 2:33 PM To: [email protected] Subject: [pestlist] moths and carpet beetles This is a message from the Pest Management Database List. To post to this list send it as an email to [email protected] To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Hello Everyone, I apologize for this long-winded email. A local university has asked me for some help involving a pest infestation in a costume collection and I thought I would ask you. This is not a museum collection but a "working" collection that is used in the theater program, etc; however, it is comprised of period clothing from the 20th century. There are about 1900 hanging textiles and another 2000 in boxes, and they are kept in a 12' X 60' room. When the collection first came to them, it showed evidence of moth/carpet beetle damage. At the suggestion of an entomologist, the most vulnerable items in the collection were frozen, the wool and silk items were vacuumed with a mesh screen, and the room that houses the collection was periodically fogged with a fabric safe pesticide. However, the infestation has returned. An exterminating company has recommended treating the room with a long lasting micro-encapsulated chemical using controlled release technology to be done on a regular basis for a year in 3 month intervals. Are there any other options or suggestions to be considered before this chemical treatment of the room? Bear in mind, this is not a museum collection, and the logistics and cost of freezing the almost 4000 items prohibits freezing the entire collection. THANKS! -- Cindy Gardner Director of Collections, Museum Division Project Liaison, Museum of Mississippi History Mississippi Department of Archives and History P.O. 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