I ve lived in 4 houses in nc as an adult and there was only 1 the second one that did not have silverfish.
Silverfish attic bomb.
It seems the air would dry them out.
Real kill indoor fogger penetrates into cracks crevices and carpet fibers to kill hidden bugs.
Silverfish eat the cellulose in paper products and the glue found in the bindings of books.
If you have books in your attic these insects can do quite a bit of damage to them.
That s what boric acid does.
This is good for such areas as the bathroom vent a classic spot for roaches.
While pyrethrins are somewhat effective against exposed flying insects such as house flies they are seldom lethal to roaches ants bed bugs spiders silverfish and other crawling pests.
The ingredients within bug bombs also tend to be repellent causing insects to scatter and move deeper into walls crevices and other hard to reach.
A 1 1 ratio dispersion of borax and sugar is a reliable bait to kill silverfish.
I can put the niban fg in my puff duster for the attic entry and or storage areas and get those pesky silverfish or roaches that are living in the christmas boxes.
I can also traipse the beams and get to a specific spot and puff puff all treated.
The scent of a sal ammoniac solution should drive away silverfish within 24 hours.
To capture silverfish sprinkle plaster on a wet white cotton cloth put it in a corner overnight near the silverfish s hideout.
So i have to wonder if the fan prevented them from making a nest in the attic.
If you have these insects in your attic there are a few things you should be aware of.