Many thanks to you both for these great replies. These are really informative. I'll google the CimeXa and add it to our list of potential solutions.
We're still happy to receive further comments as well. Kind regards, Alexandra Wade Assistant Conservator London Metropolitan Archives Town Clerk's Department City of London Tel: 020 7332 3820 www.cityoflondon.gov.uk/lma<https://gbr01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cityoflondon.gov.uk%2Fthings-to-do%2Fhistory-and-heritage%2Flondon-metropolitan-archives%3Futm_source%3Dlma%26utm_medium%3Demail%26utm_campaign%3Dsignature&data=04%7C01%7CAlexandra.Wade%40cityoflondon.gov.uk%7C1272013fe63b4d8a930808da1bd8e615%7C9fe658cdb3cd405685193222ffa96be8%7C0%7C0%7C637852915625781276%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=%2BJGAn4ROpCZ0m0dlZNDki7NP8cAds52cvLwZZ%2FFBnlo%3D&reserved=0> London Metropolitan Archives is open Monday to Thursday, 10am-4pm (including our exhibition: Magnificent Maps of London). Please check our website for the latest updates before visiting > www.cityoflondon.gov.uk/lma<https://gbr01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.cityoflondon.gov.uk%2Flma&data=04%7C01%7CAlexandra.Wade%40cityoflondon.gov.uk%7C1272013fe63b4d8a930808da1bd8e615%7C9fe658cdb3cd405685193222ffa96be8%7C0%7C0%7C637852915625781276%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=scTaKLBmx8eUnJdx9%2Fii5FTfNytIzMoIgO7TRV42%2FaY%3D&reserved=0> [cid:image001.jpg@01D85565.5FBAB8C0] [cid:image002.jpg@01D85565.5FBAB8C0] [cid:image003.jpg@01D85565.5FBAB8C0] [cid:image004.jpg@01D85565.5FBAB8C0] [cid:image005.jpg@01D85565.5FBAB8C0] From: pestlist@googlegroups.com <pestlist@googlegroups.com> On Behalf Of Louis N Sorkin Sent: 20 April 2022 18:26 To: pestlist@googlegroups.com Subject: Re: [PestList] diatomaceous earth query THIS IS AN EXTERNAL EMAIL CimeXa powder is only amorphous silica while DE has a very small percentage of crystalline silica. I know from bed bugs, CimeXa works faster than DE. Louis N. Sorkin, B.C.E. (Retired) Entomologist, Arachnologist, Myriapodologist Insect Cuisine & Entomophagy Research [cid:image006.png@01D85565.5FBAB8C0] Visiting Scientist | Division of Invertebrate Zoology | American Museum of Natural History Central Park West at 79th Street | New York, New York 10024-5192 email: sor...@amnh.org<mailto:sor...@amnh.org> 212-769-5613 voice | 212-769-5277 fax | 917-953-0094 pager-voicemail-text https://www.messagemanager.americanmessaging.net/SendMessageFree.aspx<https://gbr01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.messagemanager.americanmessaging.net%2FSendMessageFree.aspx&data=05%7C01%7Calexandra.wade%40cityoflondon.gov.uk%7C61a654b023874f5a3cfd08da22f2db7e%7C9fe658cdb3cd405685193222ffa96be8%7C0%7C0%7C637860724884048666%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000%7C%7C%7C&sdata=00ddJ%2BC%2FLdSFN43wYjUWtqf6fIB2NMLiVSPKTrSfFCY%3D&reserved=0> https://www.amnh.org/research/invertebrate-zoology/staff/collections-staff/louis-n.-sorkin<https://gbr01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.amnh.org%2Fresearch%2Finvertebrate-zoology%2Fstaff%2Fcollections-staff%2Flouis-n.-sorkin&data=05%7C01%7Calexandra.wade%40cityoflondon.gov.uk%7C61a654b023874f5a3cfd08da22f2db7e%7C9fe658cdb3cd405685193222ffa96be8%7C0%7C0%7C637860724884048666%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000%7C%7C%7C&sdata=4FvOJ8OrN8eXMRRb5jRByRLHVEIhZXQ2%2Bhq2Lz%2Fevuk%3D&reserved=0> https://www.researchgate.net/profile/Louis_Sorkin<https://gbr01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.researchgate.net%2Fprofile%2FLouis_Sorkin&data=05%7C01%7Calexandra.wade%40cityoflondon.gov.uk%7C61a654b023874f5a3cfd08da22f2db7e%7C9fe658cdb3cd405685193222ffa96be8%7C0%7C0%7C637860724884048666%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000%7C%7C%7C&sdata=6amYNj3qU%2Fa0gA8dGQtoqmrX4u4NgKO%2Fl%2Ff00ou%2FX%2F0%3D&reserved=0> [cid:image007.png@01D85565.5FBAB8C0] The New York Entomological Society, Inc. Treasurer & Monthly Meeting Organizer www.nyentsoc.org<https://gbr01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.nyentsoc.org%2F&data=05%7C01%7Calexandra.wade%40cityoflondon.gov.uk%7C61a654b023874f5a3cfd08da22f2db7e%7C9fe658cdb3cd405685193222ffa96be8%7C0%7C0%7C637860724884048666%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000%7C%7C%7C&sdata=7Z6A0lUDLzt%2FroSFQH1X0BkuF5jXUzO1SkzKpZz8C2I%3D&reserved=0> n...@amnh.org<mailto:n...@amnh.org> [cid:image008.png@01D85565.5FBAB8C0] ________________________________ From: 'bugman22' via MuseumPests <pestlist@googlegroups.com<mailto:pestlist@googlegroups.com>> Sent: Wednesday, April 20, 2022 11:05 AM To: pestlist@googlegroups.com<mailto:pestlist@googlegroups.com> <pestlist@googlegroups.com<mailto:pestlist@googlegroups.com>> Subject: Re: [PestList] diatomaceous earth query EXTERNAL SENDER Diatomaceous earth and/or silica gel will kill all stages of insects by abrading the waxy coating from the exoskeleton of an insect. The egg, larva, pupa, and/or adult then quickly dehydrates to the point of death. If protected from moisture, a light layer of dust will give months of control. It is especially helpful if applied beneath cabinetry where protein materials, such as hair, tend to accumulate. Tom Parker -----Original Message----- From: 'Wade, Alexandra' via MuseumPests <pestlist@googlegroups.com<mailto:pestlist@googlegroups.com>> To: pestlist@googlegroups.com<mailto:pestlist@googlegroups.com> <pestlist@googlegroups.com<mailto:pestlist@googlegroups.com>> Sent: Wed, Apr 20, 2022 10:36 am Subject: [PestList] diatomaceous earth query Good afternoon group, I hope you're all well and had a lovely Easter. I am emailing to enquire about diatomaceous earth and it's efficiency against booklouse. 1. Does any have experience with this product? 2. Does diatomaceous earth penetrate the exoskeleton of the booklouse? 3. Have you had any success with this product and if so against which species? 4. Is there a specific brand you're using? 5. Any pros and cons? Any research papers are also very welcome. We are specifically looking to target booklice but if it's also effective against silverfish or any other common archival pests that would be interesting to know as well. Many thanks for all of your help. Kind regards, Alexandra Wade Assistant Conservator London Metropolitan Archives Town Clerk's Department City of London Tel: 020 7332 3820 www.cityoflondon.gov.uk/lma<https://gbr01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cityoflondon.gov.uk%2Fthings-to-do%2Fhistory-and-heritage%2Flondon-metropolitan-archives%3Futm_source%3Dlma%26utm_medium%3Demail%26utm_campaign%3Dsignature&data=05%7C01%7Calexandra.wade%40cityoflondon.gov.uk%7C61a654b023874f5a3cfd08da22f2db7e%7C9fe658cdb3cd405685193222ffa96be8%7C0%7C0%7C637860724884048666%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000%7C%7C%7C&sdata=kEu83fWtnFVlitsaBKX%2BIs5JvipClTKk9YjrPRQ0vD8%3D&reserved=0> London Metropolitan Archives is open Monday to Thursday, 10am-4pm (including our exhibition: Magnificent Maps of London). Please check our website for the latest updates before visiting > www.cityoflondon.gov.uk/lma<https://gbr01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.cityoflondon.gov.uk%2Flma&data=05%7C01%7Calexandra.wade%40cityoflondon.gov.uk%7C61a654b023874f5a3cfd08da22f2db7e%7C9fe658cdb3cd405685193222ffa96be8%7C0%7C0%7C637860724884048666%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000%7C%7C%7C&sdata=D%2BLXTgS7odxUdX6Cj1agItie0WrvYxXUCxL1xaz87vY%3D&reserved=0> [cid:image001.jpg@01D85565.5FBAB8C0] [cid:image002.jpg@01D85565.5FBAB8C0] [cid:image003.jpg@01D85565.5FBAB8C0] [cid:image004.jpg@01D85565.5FBAB8C0] [cid:image005.jpg@01D85565.5FBAB8C0] THIS E-MAIL AND ANY ATTACHED FILES ARE CONFIDENTIAL AND MAY BE LEGALLY PRIVILEGED. If you are not the addressee, any disclosure, reproduction, copying, distribution or other dissemination or use of this communication is strictly prohibited. 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