Patrick- Interesting note about WCM developing on the bait in rodent bait stations. I am not familiar with the exact type(s) of bait used in those things, but I know they are used in my institution to a certain degree. I am curious if there are a variety of different baits available to use in those stations, are some extra prone to creating WCM issues? If anyone has thoughts or experience with this, I would be very interested in hearing your thoughts.
Thanks, Todd On Tue, Oct 7, 2025 at 3:55 AM Henry Murillo <[email protected]> wrote: > I totally agree with Patrick. > > To get a decent control, that pesticide has to get in contact with the > moth and better with the larval stage. I think that product may have some > repellent effect, but it won't be effective. It may have some effect but if > it is sprayed in an enclosed environment and maybe multiple sprays are > done, so still no recommended. > > Best thing to do is to look for the sources, where are the moths laying > their eggs?, where are the larvae developing? If you find the breeding > spots, you may find some parasitoids as well > > Beside the pheromone traps, have you (Somebody else) tried light traps? > Usually for moths, light traps work well around dusk time but still not > enough if the source of infestation persist > > Kind regards, > > Henry > > ------------------------------ > *From:* 'patrick.dejong' via MuseumPests <[email protected]> > *Sent:* Tuesday, October 7, 2025 3:13 AM > *To:* MuseumPests <[email protected]> > *Subject:* [PestList] Re: Webbing Clothes Moth spray treatment > > Hi Kate, > > ''If we are going to spray, I want it to be effective.'' > > Unfortunately spraying against clothing moth is in most cases not going to > be effective. You want to know where development is taking place (root > cause analysis) and want to know structural and hygienic recommendations > regarding this development from a PCP - pest control professional. In the > US there are senior pest control inspectors around that are capable of > doing this. For example, an ACE (associate certified entomologist) or BCE > (board certified entomologist) inspector. > > Has the current pest control organization ever done a Pest Risk > Assessment? Did they say what regions of the building are risks? > > Clothing moths can also develop inside mouse or rat bait stations > containing old toxic or non-toxic bait blocks. Or dead rodents that were > not removed from a trap in time. > > With regards Patrick > > Op maandag 6 oktober 2025 om 20:57:35 UTC+2 schreef Kate Fugett: > > Hello All, > > I am considering options to treat clothes moths in a film screening room > and hallway and would appreciate your thoughts. > > A bit of background: > > We frequently see large numbers (20+) of webbing clothes moths flying in > the screening room and hallway, which does not have any accessioned > objects, but is adjacent to a gallery with rotating exhibits. The hallway > and screening room are carpeted, and the walls have a textile on them. It > is unclear what the exact materials are. Though this area is regularly > cleaned, hard to reach areas are dusty providing enough to munch on even if > the textiles themselves are not food for the moths. The room and hallways > are kept dark, perfect for watching a short film and for webbing clothes > moth to flutter around as much as they would like. > > We monitor this area and adjacent exhibit spaces with pheromone traps > which have shown we have webbing clothes moths throughout the museum, but > not in such high numbers. We are considering a spray since there are no > accessioned objects, this area can easily be closed to visitors, and it is > such an ideal webbing clothes moth breeding ground. > > Our pest company has given us two options: > > - > > A green option: *EcoVia CA: *Thyme Oil – 0.88%, Rosemary Oil – 0.53%, > and Cinnamon Oil – 0.26% > - > > *PTPI: *Pyrethrins - 0.5% and Piperonyl butoxide - 4.0% > > > Both would be administered in an aerosol spray. I am especially curious > about the green option but have not had much luck finding anything on the > efficacy of these oils on webbing clothes moths. Does anyone have any > experience using this combination of oils or any of these oils on webbing > clothes moths? If we are going to spray, I want it to be effective. I don't > want to simply push these moths into other areas of the museum especially > since there are galleries with accessioned objects nearby. > > Thanks for your help and thoughts! > > Kate > > Kate Fugett | Preventive Conservator > > NATIONAL SEPTEMBER 11 MEMORIAL & MUSEUM > > 200 Liberty Street, 16th Floor | New York, NY 10281 > > www.911memorial.org | [email protected] > > O: 212-266-5210 | C: 215-280-2211 > > > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/d/msgid/pestlist/5571c5d7-0317-4760-8c74-e1def72aeee0n%40googlegroups.com > <https://groups.google.com/d/msgid/pestlist/5571c5d7-0317-4760-8c74-e1def72aeee0n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/d/msgid/pestlist/DB7P191MB047425EE93F9EC0B0BA33729AFE0A%40DB7P191MB0474.EURP191.PROD.OUTLOOK.COM > <https://groups.google.com/d/msgid/pestlist/DB7P191MB047425EE93F9EC0B0BA33729AFE0A%40DB7P191MB0474.EURP191.PROD.OUTLOOK.COM?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "MuseumPests" group. 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