Make a paste of flour water and boric acid.
How to kill silverfish in attic.
To get rid of them you only need to get rid of both moisture and food.
Coat index cards with the paste allow it to dry and use as sticky traps.
Hvac units can leave houses pretty dry particularly in the winter and that will make these bristletails very uncomfortable.
If you have these insects in your attic there are a few things you should be aware of.
Silverfish eat the cellulose in paper products and the glue found in the bindings of books.
Sprinkle diatomaceous earth in cabinets and other dark areas.
Using repellents and insecticides 1.
The silverfish crawl in but they can t get out.
Buy a chemical spray.
If you have stored photos silverfish can chew their way in and ruin those photos.
Also silverfish like damp areas.
Make your own silverfish trap by covering the outside of a glass jar with masking tape to help the critters crawl in then put crackers or something starchy in the bottom of the jar as bait.
This is another natural substance that kills both silverfish and their eggs.
You can start by vacuuming your house.
Silverfish will even feed on hair strands that have fallen off your head.
Silverfish depend on moisture and food to survive.
If you live in a wet area and you have no leaks then you need a dehumidifier.