Hello Marieve, I actually think you should try a baiting program for your Surinam cockroaches. they react to Hydramethylnon just like other cockroaches do and would be a more effective way of eliminating cockroaches from your environment. If placed in the correct type of feeding station - it will not affect the beneficials living on your display.
This article from PCT is exactly what you are looking for. Gel baitr was placed in very simple to make stations that excluded butterflies and was effective at eliminating the roaches. Read this - you will find it helpful! https://www.pctonline.com/article/-university-research--controlling-cockroaches-in-insect-rich-environments/ Regards,  Dr. Jill Gordon Urban Entomologist Mantis Consulting 86 Crease Rd Mt. Olive NJ 07828 (973) 945-1776 [email protected] > On Nov 13, 2025, at 2:11 PM, Mariève Perron <[email protected]> wrote: > > Thank you very much Patrick! > > Mariève Perron > > Technicienne en conservation/Conservation Technician > > Musée Canadien de la nature/Canadian Museum of nature > > 819-923-8818 > > > De : 'patrick.dejong' via MuseumPests <[email protected] > <mailto:[email protected]>> > Envoyé : jeudi 13 novembre 2025 14:06 > À : MuseumPests <[email protected] <mailto:[email protected]>> > Objet : [EXT][PestList] Re: Surinam cockroaches > > COURRIEL EXTERNE. Ne cliquez sur aucun lien ou pièce jointe à moins que vous > ne connaissiez l'expéditeur. > EXTERNAL EMAIL. Do not click any links or attachments unless you know the > sender. > Hi Mariève, > > I have experience in managing pest roaches, like German, American and also > Surinam cockroaces. Surinam cockroaches are less common pest roaches in the > Netherlands due to their diet and more importantly dependence on climate but > can be a problem and reproduce quickly. In this case, I’d say that control is > the most achievable strategy. This can be done using traps with attractants — > I’ve had very good experiences with the HoyHoy Trap A Roach, also for > managing Surinam cockroaches, in botanical gardens with butterflies. I > replaced the traps weekly, since they where full every 7 days. To prevent > visitors and others from accessing them, I used to hide the traps under half > plastic drain pipes. > Make sure to number the traps and mark their locations on a floor plan to > ensure all traps are checked during inspections. It’s also a good idea to > record the results in a pest control portal to track trends over time. > Good luck, and if you decide to try this method, I’d be curious to hear about > your results. > > With regards Patrick > > Op donderdag 13 november 2025 om 18:36:14 UTC+1 schreef Mariève Perron: > Hello everyone, > I am reaching out for your expertise regarding an IPM challenge we are > experiencing in our solarium, which currently hosts a live butterfly > exhibition. > We have had an introduction of Pycnoscelus surinamensis (Surinam > cockroaches), which have established a stable population. Prior to the > arrival of the butterflies, we were able to remove and replace a significant > amount of soil; however, some permanent garden beds with large tropical > plants could not be emptied. We also conducted a deep cleaning and > temporarily reduced both humidity and temperature in an attempt to make the > environment less suitable for the cockroaches. > Now that the solarium is once again maintained under warm, humid, tropical > conditions and with abundant food resources the cockroach population is > increasing and thriving. > We are looking for safe, butterfly compatible strategies to help reduce > cockroach numbers. Once the exhibition ends, we will be able to remove all > substrate and conduct a complete sanitation of the space. > For context, these cockroaches do not pose a threat to our museum > collections, but they are undesirable within the exhibition environment. > Any advice, experience or recommendations would be greatly appreciated. > Thank you, > > Mariève Perron > Technicienne en conservation/Conservation Technician > Musée Canadien de la Nature/Canadian Museum of nature > 819-923-8818 <tel:(819)%20923-8818> > > > <https://nature.ca/> > > -- > This PestList and the MuseumPests.com <http://museumpests.com/> web site are > made possible due to the talent, intelligence, devotion and donations of > hundreds of volunteers. Your donation to help this resource continue would be > greatly appreciated. > > Please consider a donation donating at https://givebutter.com/MuseumPests > > To unsubscribe from this group, send email to > [email protected] > <mailto:[email protected]> > --- > 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] > <mailto:[email protected]>. > To view this discussion visit > https://groups.google.com/d/msgid/pestlist/f5088ff0-7d26-492c-8f66-758558ab6b06n%40googlegroups.com > > <https://groups.google.com/d/msgid/pestlist/f5088ff0-7d26-492c-8f66-758558ab6b06n%40googlegroups.com?utm_medium=email&utm_source=footer>. > > <https://nature.ca/> > > -- > This PestList and the MuseumPests.com <http://museumpests.com/> web site are > made possible due to the talent, intelligence, devotion and donations of > hundreds of volunteers. Your donation to help this resource continue would be > greatly appreciated. > > Please consider a donation donating at https://givebutter.com/MuseumPests > > To unsubscribe from this group, send email to > [email protected] > <mailto:[email protected]> > --- > 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] > <mailto:[email protected]>. > To view this discussion visit > https://groups.google.com/d/msgid/pestlist/YQXPR01MB3000015B914DF29BC73A9EDFB6CDA%40YQXPR01MB3000.CANPRD01.PROD.OUTLOOK.COM > > <https://groups.google.com/d/msgid/pestlist/YQXPR01MB3000015B914DF29BC73A9EDFB6CDA%40YQXPR01MB3000.CANPRD01.PROD.OUTLOOK.COM?utm_medium=email&utm_source=footer>. -- This PestList and the MuseumPests.com web site are made possible due to the talent, intelligence, devotion and donations of hundreds of volunteers. Your donation to help this resource continue would be greatly appreciated. Please consider a donation donating at https://givebutter.com/MuseumPests To unsubscribe from this group, send email to [email protected] --- 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/B9BEDF09-F2D2-45E6-A879-C0916706C99E%40gmail.com.
