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I usually favor diatomaceous earth. Diatomaceous earth works effectively as both a digestive and contact insecticide (it is a desiccant), whereas boric acid must be ingested by the insect during grooming to be effective. If you go with Diatomaceous earth, I have found Mother Earth D by Whitmire Microgen to be effective; just make sure the crystalline silica content on whatever you purchase is below 3% and you wear a dust mask during application. I recently did some online research on diatomaceous earth and have posted some tidbits about it at this link: http://pestguy1776.wordpress.com/2010/10/26/httppestguy1776-wordpress-com/ If you opt out of both dusts and go with Niban, I recommend using the Niban Fine Bait, which is specifically made for smaller insects. -----Original Message----- From: pestlist-ow...@museumpests.net [mailto:pestlist-ow...@museumpests.net] On Behalf Of Scott Harvey Sent: Monday, November 01, 2010 3:07 PM To: pestlist@museumpests.net Subject: RE: [pestlist] diatomaceous earth vs. boric acid This is a message from the Pest Management Database List. To post to this list send it as an email to pestlist@museumpests.net To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Niban bait would work better. Scott Harvey Pest Specialist University of Colorado, Boulder 303-735-0406 -----Original Message----- From: pestlist-ow...@museumpests.net [mailto:pestlist-ow...@museumpests.net] On Behalf Of samantha_rich...@nps.gov Sent: Monday, November 01, 2010 1:04 PM To: pestlist@museumpests.net Subject: [pestlist] diatomaceous earth vs. boric acid This is a message from the Pest Management Database List. To post to this list send it as an email to pestlist@museumpests.net To unsubscribe please look at the footer of this email. ----------------------------------------------------------- Hello all, I am writing to solicit opinions on the relative merits of using diatomaceous earth vs. boric acid to treat silverfish. Recommendations of specific products would be great. The storage area in question is a relatively sound finished basement room with two or three silverfish showing up in traps per week. We're looking to move more collections into the room and would like to treat it prophylactically. Also, any opinions on whether we would need to move all of the collections out of the room during treatment or could we move storage equipment to the center of the room and just treat the nooks and crannies? Thanks for your help! Samantha Richert Project Curator/NPSA Curator of Record PWR - Cultural Resources 909 First Avenue Seattle, WA 98104 206-220-4130 ------------------------------------------------------------- To send an email to the list, send your msg to pestl...@museumpests.com To unsubscribe from this list send an email to imail...@museumpests.net and in the body put: "unsubscribe pestlist" Any problems email l...@zaks.com ------------------------------------------------------------- To send an email to the list, send your msg to pestl...@museumpests.com To unsubscribe from this list send an email to imail...@museumpests.net and in the body put: "unsubscribe pestlist" Any problems email l...@zaks.com ------------------------------------------------------------- To send an email to the list, send your msg to pestl...@museumpests.com To unsubscribe from this list send an email to imail...@museumpests.net and in the body put: "unsubscribe pestlist" Any problems email l...@zaks.com
