Silverfish: What They Are and How to Get Rid of Them

Silverfish are small, wingless insects known for their silvery color and wriggling movement. About 1½ inches long with flat, carrot-shaped bodies and long antennae, they often startle homeowners by darting across floors—especially in damp areas like bathrooms or basements. Though they’ve existed for millions of years, silverfish remain unwelcome guests in modern homes.

These pests are drawn to places that offer moisture, darkness, and carbohydrates. Common hotspots include bathrooms, kitchens, laundry rooms, and basements. They feed on starchy or sugary items such as paper, glue, cardboard, fabrics, crumbs, and even dandruff—making books, clothes, wallpaper, and pantry goods vulnerable.

While they don’t bite or carry disease, silverfish can cause serious damage to household items and multiply quickly if left unchecked.

Signs of an infestation include:

• Spotting live insects

• Yellow stains or holes in paper and fabrics

• Shed skins from molting

• Small black droppings

• Damage near wallpaper seams

To eliminate silverfish:

• Reduce humidity with dehumidifiers and better ventilation

• Store food and paper goods in airtight containers

• Declutter and clean damp spaces

• Seal cracks and crevices with caulk

• Use natural repellents like diatomaceous earth or essential oils

• Set traps or consult pest control for larger infestations

Prevention is key: maintain a dry, clean, and organized home. Regular cleaning and moisture control are your best defenses against silverfish returning.