Have you ever seen a small, shiny, silver bug wiggle across your floor? That might be a silverfish. They look a bit like tiny fish with their color and movement. When people see them, they often ask, are silverfish harmful? The quick answer is that they are not very dangerous to people or animals. But, they can cause some other problems in your home.
This guide will tell you everything you need to know about these little critters. We will look at if are silverfish harmful to humans and if are silverfish harmful to pets. You will also learn about the damage they can do and how to keep them out of your house.
Do Silverfish Hurt People or Pets?

Good news! Silverfish do not bite or sting people. High-authority health websites like WebMD confirm that they don’t carry diseases. So, you do not need to worry about them making you sick in that way.
What about your furry friends? Many people wonder, are silverfish harmful to cats or are silverfish harmful to dogs? The answer is no. Silverfish are not poisonous. If your cat or dog eats one, they should be fine. These bugs are more of a bother than a danger to your family and pets. We published a latest post on Best Silverfish Traps and Prevention Tips. 2025 Guide
The Real Damage Silverfish Cause
The main problem with silverfish is the damage they do to your things. This is called silverfish property damage. They love to eat things that have starch in them. Starch is a type of sugar found in many household items.
Silverfish can ruin:
- Books and Paper: They eat the glue in book bindings and munch on photos and important papers. They can also eat the paste on wallpaper, making it peel.
- Clothing and Fabric: Do silverfish eat clothes? Yes, they do. They especially like cotton, linen, and silk. They also eat starch on clothes that have been ironed. This can leave small holes or yellow stains on your favorite shirts and sheets.
- Food: These bugs can get into your pantry. They contaminate food like flour, cereal, pasta, and even pet food. It is always best to throw away any food you find bugs in.
- Walls and Surfaces: Their droppings look like tiny black dots and can leave yellow stains on walls, floors, and other items.
If you are seeing signs of damage but haven’t spotted the pests, it might be time for a closer look. For a professional inspection and peace of mind, contact our team today. Yesterday, we published a post on What is a Baby Silverfish? How to Get Rid of Them Fastly in 2025
Health Risks and Other Worries
Even though silverfish do not bite, they can still cause some health issues.
Some people might have allergic reactions to them. Silverfish shed their skin as they grow. The tiny scales from their skin and their droppings can float in the air. For people with allergies or asthma, breathing this in can cause sneezing, coughing, or itchy eyes.
Seeing silverfish can also be a warning sign. These bugs love damp, wet places. If you have a lot of silverfish, it might mean you have a water leak or too much moisture in your home. This could lead to bigger problems like mold. Read out the latest post on Bugs That Look Like Silverfish in House? 2025 Guide
How to Get Rid of Silverfish
Getting rid of silverfish means making your home a place they do not like. Here are some simple steps you can take:
- Lower the Humidity: Silverfish need moisture to live. Use a dehumidifier in damp areas like basements, bathrooms, and laundry rooms. Make sure these rooms have good airflow.
- Seal Up Cracks: Stop silverfish from getting inside. Fill any small cracks or holes in your walls, floors, and around pipes or windows.
- Store Things Safely: Keep their food away from them. Store dry foods like cereal and flour in airtight containers. Put important photos, books, and special clothing in sealed plastic bins.
- Clean Up: Vacuum your home regularly to remove food crumbs and dust. Silverfish can eat dust if it contains dandruff or other tasty bits for them.
For a big infestation, these steps might not be enough. A professional pest control service can help get rid of them for good.
Don’t let silverfish ruin your belongings. Get a free quote for professional pest control services and protect your home.
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Conclusion:
So, are silverfish harmful? No, they are not directly harmful to you or your pets. They do not bite, sting, or carry diseases. However, their eating habits make them a serious pest that can destroy your property. From your favorite book to your wedding dress, many items are at risk if you have an infestation. Follow Us on Facebook, Pinterest and Twitter for the latest updates.
The best way to deal with silverfish is to prevent them from feeling comfortable in your home. Keep your home dry and clean, and store your belongings carefully. If you find yourself with a silverfish problem, taking action quickly will protect your home and your precious items. Read the post on How to Get Rid of Silverfish in Bathroom Naturally? 2025 Guide
FAQs
Should I be worried if I see a silverfish?
Seeing one silverfish is not a big worry. Seeing many could mean you have a dampness problem and a growing pest issue.
Why shouldn’t you kill silverfish?
Some people say not to crush them because they can leave stains. Also, spiders, centipedes, and earwigs eat silverfish, so they are part of the food chain. However, you do want to remove them from your home.
Is it safe to sleep in a room with silverfish?
Yes, it is safe. They will not crawl on you or bite you while you sleep.
What causes silverfish in the home?
Silverfish are attracted to damp, dark, and warm places with plenty of food sources like paper, glue, and starched fabrics.
Do silverfish mean a dirty home?
Not at all. A very clean home can have silverfish if there is moisture and a food source for them.
What smell do silverfish hate?
Silverfish dislike strong smells like cedar, cinnamon, cloves, and citrus.
How do I get rid of silverfish permanently?
You need to remove their food sources, reduce moisture, seal entry points, and call a pest control expert for large infestations.
Do silverfish lay eggs in clothes?
They can, especially in clothes that are stored in damp, dark places like closets or attics.
What is the lifespan of a silverfish?
They can live for a surprisingly long time, from two to eight years.
What do silverfish turn into?
Silverfish do not turn into anything else. A baby silverfish looks just like an adult, only smaller and whiter.
Do LED lights attract silverfish?
No. Silverfish prefer the dark and are not attracted to light. They will run away from it.
What season do silverfish go away?
Silverfish can be active all year round inside a home. They do not have a season where they “go away.”


