Silverfish don’t need traditional food like other pests.
Instead, they feed on materials rich in starches and proteins, including:
Paper and books
Cardboard boxes
Glue and wallpaper
Fabrics and clothing
Food crumbs or residues
That’s why they often appear in places like bookshelves, storage areas, closets, and pantries.
If silverfish are present, it usually means they’ve already found a steady food source nearby—even if you haven’t noticed it.
A Quiet Indicator of Your Home’s Condition
In many ways, silverfish act more like indicators than intruders.
Their presence suggests your home is offering exactly what they need: moisture, darkness, and access to food.
They are also nocturnal, meaning they prefer to stay hidden during the day and come out at night.
So if you start seeing them in daylight, it may indicate a larger infestation—when overcrowding pushes them out of their hiding spots.
Why You Shouldn’t Ignore Them
