The active ingredient is built into a corrugated “wafer” of paper ( I can’t 
imagine much if any would ever aerosolize)I have used them under sticky traps. 
Also larger (6x4) sticky cards elevated with pennies and placed glue side down 
in dark areas is an old trick I was taught by  Mr. Tom Parker that works quite 
well for catching silverfish. JTV

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________________________________
From: [email protected] <[email protected]> on behalf of 
Jennifer Sainato <[email protected]>
Sent: Monday, 26 October 2026 20:28:29
To: [email protected] <[email protected]>
Subject: Re: [PestList] Silverfish Dekko Paks - Thoughts?


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Hi Katey—
I haven’t worked with Dekko Silverfish Paks, but a serious problem with using 
boric acid is that as it disperses due to ventilation and foot traffic, it can 
cause damage to human lungs and result in particulate matter on collections 
that can scratch and irritate the objects and the hands of future handlers if 
they are not warned to wear hand protection.

This form of application contains the powder better than loose application, but 
there’s no data on how much particulate boric acid from these traps actually 
ends up being released from the trap and whether it is then able to transfer to 
objects and visitor lungs. It should absolutely not be placed in contact with 
objects. If you use it like a sticky trap, please be aware that it’s not 
sticky. The silverfish will not be trapped in the pak, and you will need to 
step up your housekeeping to deal with insect bodies that could in turn lure 
other scavengers.

You can find the SDS here: 
https://www.freedomforcepest.com/wp-content/uploads/2023/06/Dekko-Silverfish-SDS-3-7-16.pdf
Use gloves when handling the paks. Handling them up is not recommended for 
people with respiratory issues or people who are pregnant. Make sure that 
they’re sealed in a closed bag when disposed of, and be aware of the 
deleterious effect on the larger environment that comes with using and 
disposing of boric acid when you measure the pros/cons. I am neither an 
industrial hygienist, an entomologist, nor a conservation scientist; please 
take these statements as general guidance and ask an expert if you have 
specific questions.

Have you looked into whether there are water sources in your collections spaces?

Good luck with your silverfish challenge!

Jennifer

On Oct 22, 2026, at 4:12 PM, kleard <[email protected]> wrote:

Hello All,

I am reaching out to this group for opinions and thoughts on the use of Dekko 
Paks (20% Boric Acid) for the management of silverfish in collections storage 
and galleries?

Any information would be greatly appreciated.

Best,
Katey

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