Why do I have silverfish in my house?

Author: Darrel Dibbert  |  Last update: Wednesday, December 24, 2025

Where Do Silverfish Come From in Homes? Silverfish sometimes make their way indoors in search of food. However, people may also bring silverfish inside by mistake. The pests can be taken indoors with infested dry food products, boxes of books or paper, fabrics and other items that have a high starch and sugar content.

Why do I have silverfish if my house is clean?

Leaky spigots or clogged or broken gutters. If you have water running down the outside of your home, or water collecting in the soil, this will create conditions that silverfish love. Beyond this, it can also cause the wood on your home to soften, which will make it easier for pests to chew their way in.

How do I get rid of silverfish in my house?

Use borax. Borax is an effective way to kill silverfish. For best results, purchase borax at your local home goods store, and spread a thin layer anywhere you've noticed silverfish. It's particularly appropriate for use on the back side of cabinets, along baseboards, in closets, and beneath appliances. The Absolute.

Should I be worried if I have silverfish?

Silverfish won't hurt you at all; they don't bite (except some rare, probably mistaken or confused reports), they don't carry disease. However, seeing them is a sign that water might be building up in your walls from a leak.

What causes silverfish to come out?

Silverfish typically come from dark, humid areas and can enter homes through cracks, openings, or infested items. Once indoors, they thrive in environments with easy access to food sources, especially those rich in starch and sugar.

Why You Do Not Want Silverfish in Your Home

Should I squish silverfish?

Should I Squish Silverfish? While it may be tempting to squish a silverfish when you see one, doing so is not the most effective way to deal with an infestation. Killing an individual silverfish does not address the root of the problem, as they reproduce quickly and tend to hide in hard-to-reach places.

Is seeing silverfish mean an infestation?

The pest professionals at Greenhouse have been trained in thorough inspection. Based on this expertise, one silverfish sighting alone doesn't necessarily indicate an infestation.

Will silverfish eventually go away?

For Silverfish to just go away, the moisture and/or food sources need to be eliminated.

Will silverfish get in your bed?

Although they prefer places like bathrooms and closets, it is possible to find silverfish bugs in beds. These insects are about half an inch in length with silver teardrop-shaped bodies and long antennae. While they're more annoying than harmful, these pests can damage bedding.

Do silverfish indicate mold?

Silverfish can contaminate foods and eat through fabrics, paper, or other items. Silverfish eat mold, so their presence may also indicate a mold issue in your home. They are also a preferred food of spiders, centipedes, and other insects, so silverfish in your home may attract these pests.

What do silverfish hate the most?

Bay leaves- silverfish don't like scent of bay leaves or cloves. Place these where insects appear.

How to find a silverfish nest?

Where do they live? Silverfish are found in fairly moist areas such as kitchens, larders and mainly in bathrooms and basements. They can also be found in books and paper, slightly damp cupboards, behind skirting boards and loose wallpaper.

What scent keeps silverfish away?

Peppermint oil is particularly effective at repelling these pests due to its strong scent. Other essential oils that may work include lavender, cedarwood, and tea tree oil. To use essential oils for pest control, mix a few drops with water in a spray bottle and apply to areas where you have seen silverfish activity.

What month are silverfish most active?

Although silverfish can be active during every season, their indoor activity often peaks in the springtime. Southern California winters can actually provide more moisture and better conditions for silverfish to live in outdoors.

What kills silverfish?

If you have an infestation, household sprays containing synergized pyrethrin and pyrethroids such as bifenthrin, cyfluthrin, tetramethrin, and phenothrin should kill firebrats and silverfish on contact and provide some residual activity.

Are there more silverfish if I see one?

Spotting one isn't necessarily a sign of a problem, but if you find multiple, you might have a bigger problem on your hands. That's because they go where they can find nourishment and water, so you might just discover you have a leak somewhere in your home.

When to worry about silverfish?

When silverfish are found in large numbers, their presence is definitely a cause for concern. In fact, silverfish can cause significant destruction. Many materials that we keep in our homes are those on which silverfish love to feed.

Will keeping lights on keep silverfish away?

Light Up Dark Areas Of Your House

They hate light. Therefore, giving them what they dislike is one of the ways to keep them away.

Can silverfish infest your hair?

Silverfish will eat almost anything, including your hair, dandruff, and skin cells. They can also feast on the foundations of your building, as well as your food and clothing. Here is a complete list of what silverfish will eat if they have the opportunity: Books.

Will silverfish crawl on me in my sleep?

If you have dandruff, you may find these bugs crawling on you while you sleep, or crawling around on your hairbrush in the bathroom.

How to avoid silverfish?

HELP ELIMINATE SILVERFISH

Keep kitchen floors, counters, and cupboards clean. Pay special attention to cracks where the baseboard meets the floor. Wipe down bookcases, closet shelves, and door and window frames. Vacuum behind the oven, microwave, toaster, and refrigerator.

How many silverfish is an infestation?

Does seeing one silverfish mean an infestation? If you see one silverfish, there is a good chance hundreds are living in your home. A single female can lay 100 eggs in her lifetime and it only takes 3 months from egg to adult. It doesn't take long for silverfish infestation to get out of hand.

Does silverfish mean dirty?

Many people think a sighting of a Silverfish in their home is a sign of an unclean home, however this is not the case. Silverfish are not attracted to dirty homes; they are attracted to moisture. They need moisture to survive and will establish themselves anywhere where moisture levels in your home are high.

Is there a silverfish season?

There is no real pest season for silverfish as they live indoors.

What naturally kills silverfish in the bathroom?

Diatomaceous earth is a good option if you're looking for a natural way to kill silverfish. This powder is made from diatoms - the fossilized remains of tiny aquatic creatures. Diatomaceous earth (DE) is an excellent home remedy that works by puncturing the insect's exoskeleton, causing it to dehydrate and die.

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