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Group - It sounds like the applicator is going to use an aerosol or fog application of Gentrol --- NOT good for any collection. Pesticide applications are short-term "fixes"; you really haven't found the reasons infestations exist and aim prevention methods at them. And yes, it will hold larvae in the larval state where they will keep on feeding. It's time you had someone set up a proper IPPM (Integrated Preventive Pest Management) program for your facility, which would basically eliminate the need for any pesticides (except for your termite situations). For instance, there are readily-available pheromone traps for drugstore beetles. Wouldn't it be more logical to have a thorough inspection and find out the source of the drugstore beetles? Is it old rodent bait? Is it some sort of dried plant material? Or is it someone housing cooking spices somewhere nearby? Is it an accumulation of pigeon droppings in an attic or an exterior ledge? Same could be said for the cockroaches - why are they present and where is the source? If it's American's, they are probably walking in. Thomas A. Parker, PhD President, Entomologist Pest Control Services, Inc. 469 Mimosa Circle Kennett Square, PA 19348 www.museumpestcontrol.com -----Original Message----- From: Alan P Van Dyke <apvand...@utexas.edu> To: pestlist <pestlist@museumpests.net> Sent: Mon, Jun 27, 2016 1:05 pm Subject: Re: [pestlist] IGRs This is a message from the Museumpests.net List. To post to thislist send it as an email to pestlist@museumpests.net To unsubscribe look atthe footer of thisemail. ----------------------------------------------------------- We already spray the exterior of the building with esfenvalerate, which has helped tremendously preventivng new critters from getting in. However, we still need to address our resident populations. My understanding is that Gentrol (hydroprene) will also affect a handful of other common pests, including drugstore beetles. Our biggest concern about using this product is how the IPM coordinator for our campus described how it is used. He made it sound like the chemical travels through the building, or at least parts of it, meaning that it touches everything. We're used to target spraying, but the idea of a chemical floating through the air and coming into contact with photographic collections does raise a concern. Another concern we are curious about is if Gentrol arrests development of larva, do they stay in the larval stage longer and cause more damage to whatever they are feeding on as a result? Mostly I'm interested in hearing if anyone else out there has tried IGRs and what their experiences are. Thanks, Alan On Mon, Jun 27, 2016 at 11:24 AM, bugman22 <bugma...@aol.com> wrote: This is a message from the Museumpests.net List. To post to this list send it as an email to pestlist@museumpests.net To unsubscribe look at the footer of this email. ----------------------------------------------------------- Group - Insect growth regulators do not work on all insects across the board. They work primarily on cockroaches and fleas. They disrupt the molting process of cockroaches and hold fleas in the harmless larval stage. They would not be a good choice for fabric pests or silverfish. Tom Parker -----Original Message----- From: Voron, Joel <jvo...@cwf.org> To: pestlist <pestlist@museumpests.net> Sent: Mon, Jun 27, 2016 10:12 am Subject: Re: [pestlist] IGRs This is a message from the Museumpests.net List. To post to thislist send it as an email to pestlist@museumpests.net To unsubscribe look atthe footer of thisemail. ----------------------------------------------------------- What is the target pest? Joel Voron Colonial Williamsburg Foundation Conservation Dept. Integrated Pest Management Office 757-220-7080 Cell 757-634-1175 E-Mail jvo...@cwf.org From: pestlist-ow...@museumpests.net <pestlist-ow...@museumpests.net> on behalf of Alan P Van Dyke <apvand...@utexas.edu> Sent: Monday, June 27, 2016 9:40:18 AM To: pestlist@museumpests.net Subject: [pestlist] IGRs This is a message from the Museumpests.net List. To post to this list send it as an email to pestlist@museumpests.net To unsubscribe look at the footer of this email. ----------------------------------------------------------- Hello PestList, We've been approached by our campus IPM coordinator about using insect growth regulators within our building. Being as that we are the home to not only a large collection of books and manuscripts, but photographs as well. If we were just a regular library, I'd say to go for it, but we aren't. What is the current thought on using IGRs in cultural institutions, especially those with chemically sensitive collections? Thanks, Alan Van Dyke -- Alan P. Van Dyke Preservation Staff Harry Ransom Center The University of Texas at Austin P.O. Box 7219 Austin, TX 78713-7219 P: 512-232-4614 www.hrc.utexas.edu ------------------------------------------------------------- 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 ------------------------------------------------------------- Tounsubscribe from this list send an email to imail...@museumpests.net and inthe body put: "unsubscribe pestlist" Any problems email l...@zaks.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 ------------------------------------------------------------- Tounsubscribe from this list send an email to imail...@museumpests.net and inthe body put: "unsubscribe pestlist" Any problems email l...@zaks.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