Half-eaten pages in your books? Chewed-through boxes in your pantry? These are signs of a silverfish infestation. Here’s how to identify, get rid of, and prevent silverfish infestations in the home.
What Are Silverfish?
The silverfish (Lepisma saccharina) is a slender, silvery insect pest found around the globe.
Siverfish are only considered a nuisance pest when they get into homes. There they are difficult to control but they are not harmful to humans nor spread disease. Instead, silverfish are known for damaging material goods, such as books, wallpaper, photos, clothing, and dry foods in the kitchen pantry.
Silverfish are particularly attracted to under-sink areas in the bathroom or kitchen, where the environment is humid and dark. They may also live in walls, closets, or crawl spaces. They remain hidden during the day, but at night, they emerge to forage for food.
A similar insect pest, the firebrat, looks and behaves much like the silverfish. Both pests can be controlled using the same techniques.
Fun Fact: The latter half of the silverfish’s Latin name, saccharina, refers to the insect’s fondness for eating materials made of polysaccharides (complex carbohydrates), such as cellulose and starch, which are found in paper products, fabrics, and foods.
Reader Comments
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Cockroaches, ants, silverfish and spiders
Our "monsoonal moisture" near the beach in summertime SoCal brings legions of cockroaches into my house, along with ants and spiders. A pest control company has placed ant traps and sticky boxes for roaches and other intrusers inside the house and sprayed something toxic around the exterior foundation. This is week six and the ants have disappeared, but the roaches are still in evidence -- living, dying and dead -- and they are a huge, disgusting, always horrible surprise in the night when I switch on a light and walk into a previously darkened room. No form of extermination is too cruel for these gross pests, and anyone here who thinks otherwise must never have had an infestation. The only issue is: does it work?
Silverfish
I lay a long thin line of regular iodized table salt in the area where I found Silverfish. The Silverfish eat this and it kills them. I have to keep a constant watch for the criter. I do have a lot of humidity in my house.
Cedar oil
I have used cedar oil diluted with water in a spray bottle to get rid of silverfish. Great for getting in to walls or any gaps between baseboards and flooring.
Aunt Traps killed the silver fish in my garage.
I live in Florida. I had an infestation of silver fish, when someone brought me over a folding table to use that was full of them. I left the table in the garage. I had and always put out Ant traps through out my home and in the garage. They all died with the Ant traps. I also put Borax at each entrance to my home on the inside. Silverfish have an exoskeleton (hard outer shell). Borax kills any insect with an exoskeleton because the powder dries out and cracks their shell and they die. Borax also kills fleas, cockroaches, earwigs, etc.
Silverfish
I live in Florida and silverfish seem to thrive here. After reading your article and all if the comments, I can tell all of you that none of what you said works. I have tried all the remedies mentioned and the silverfish are still ruling and ruining my home. I too am a quilter with lots of fabric in the house. I do use bags the can be sealed and the air removed to store finished quilts. I put cedar blocks in the boxes where other quilts are stored. This works to some extent. After being in my home for six years, I have now gotten an infestation of large black spiders. They have been dying by shoe power. I will be spraying in interior of the house in just a bit to try to get rid if them. I am really at the end of my rope for all if the bugs here. Palmetto bugs my tush! Call them what they are, cockroaches. Rant over.
Silverfish enemy
I know this sounds crazy, but after reading an article written by a world famous scientific about the predacious habits of earwigs, I've stopped killing them. Early one morning, turning on the bathroom light I discovered an earwig chowing down on a silverfish. We've had a heavy infestation of huge carpenter ants. We could even hear them chewing on our deck. I managed to capture an earwig and released it at the entrance to the ant's nest. Into the nest it went and out came a river of ants. We haven't had an ant problem since. No pesticides required.
Silverfish
"We recommend only using sticky traps that contain a pesticide in the glue, as this will prevent a trapped insect from suffering for too long needlessly."
Seriously?
Poisons shut down bio functions and cause death. DE looks like shards of glass under a microscope. On insects like fleas, cockroaches, and silverfish, DE works to puncture the body which then dehydrates the insect and the bug dies, eventually. None of this is likely painless for beings that actually feel pain. We only have to worry about being humane to animals that feel pain. Insects do not feel pain. Besides, insects are bugs. Step on them!
Killing silverfish in the home
There are thick paper wrapped DE (diatomaceous earth) packets that are readily available on Ebay and probably in some hardware stores. They are approx 3x4 inches and you can just place them on bookshelves and in drawers or file cabinets. The silverfish are attracted to the paper and come in contact w/the DE which kills them. Since I have been using them the unnerving numbers of silverfish I've had in my home have been reduced to none. I believe Borax is actually DE. You could probably make your own by wrapping DE in wallpaper squares and gluing together. DE packets are effective and so much neater and easier to work with than glue traps. And as our resident retired Pharmacist mentioned, spiders in the home will help keep down bug populations.
silverfish abatement
I line all my clothes closets, linen cabinets etc. with cedar...works like a charm. works in drawers and boxes out in the garage. I usually put down some paper or tissue if I'm putting clothing on top of the cedar. I have no problem with the little buggers!
saving books
Does anyone have experience with protecting old books from silverfish? I use bay leaves right now. I am thinking that putting DE or cinnamon around the books could get messy.
Silverfish
Another type of Bay Leaves kills insects and that is laurel leaves. They look like bay and are a type of bay. They contain cyanide so don't put them where you can smell them or you'll get a sore throat. I used to collect bugs as a kid and used them in my killing jar.
Saving Books
You could try using cinnamon sticks. You could place them in a pretty bowl, basket, or tray with your bay leaves and/ or cloves (like a potpourri arrangement). I also wonder if a simmering potpourri pot would work?
Silverfish
People have approached me (ex-Pharmacist, retired) about these and I often tell them they're quite pretty and if they're somewhere they can do no harm then treat them as a pet! It does beg the question though: why are people so hell bent in getting rid of spiders in the home?
Silverfish
My Grandmother always used Borax powder to get rid of silverfish. A big box is reasonably priced and I suspect that it works the same way as the DE powder does. I have used this up in my attic where I have seen these nasty critters. I poured it on the long beams around the perimeter of the house. I don't know if I got rid of all of them but I don't see many anymore in the living area. I also put the borax in the back of my cabinets in the kitchen and along the wall behind my dishwasher and stove. I poured it in a line in front of the dishwasher and used a hairdryer to blow it under to get it to the wall. Worked like a charm.
Borax for pest deterrent
I too have successfully used borax as a cost effective pest deterrent for silver I should, ants, etc. Works very well. It dehydrated them and you just vacuum it up. If you mix borax in sugar water the ants eat it, take it back to the colony and eliminates them all.
Silverfish In Fabrics
I appreciate this comment about using Borax to handle the "Invasion of Silverfish" and other insect pests. Silverfish are in hog heaven on cotton and linen fabrics that have been sprayed with aerosol starch while ironing. They lay their eggs in or on a substances where there is a guaranteed food supply for their young. "Sizing" applied by fabric manufacturers to keep their cotton and linen fabrics crisp and appealing to the consumer, is another substance that silverfish feed on.
I, like the majority of Quilters, have an abundance of fabrics in my stash or trove of goods. I also have a cache of hundreds of magazines as well as books, that I've purchased used from local charity thrift shops; garage and tag sales; and online. I consider calling fabric, threads and reading materials "used" if they were not purchased from a retail store. There are no assurances that the fabrics have not been in the presence of insects like silverfish, and usually one who is buying preowned fabrics, wouldn't consider asking about silverfish. Most buyers are concerned with damp, mildew basement or tobacco odors. And if the thought or hint of insects being anywhere near the fabrics, it's usually cockroaches that come to mind.
I do not launder my fabrics before I use them. So, in order to prevent any outbreak of of infestation from eggs layed in the fabric folds, I always place purchased fabrics in a plastic zipper bags used for food storage just as soon as I'm able too. Until then, the purchases remain in my garage until I place them in the bags for my sewing room. It's not enough to keep fabrics in plastic tote containers, insects are able to wiggle in and out of the tote's lids. I use small quart sized zip lock bags or sandwich size zip lock bags for fat quarters. The 1 gallon sized zipper bags are adequate for 1-2 yards of folded fabrics. And the 2 gallon sized zipper bags are perfect for larger sized measures of fabric. My fabrics are not used as a display or decor items, so it matters little to me if they're kept in plastic.
I buy bulk sized quantities of these storage bags. And I reuse them after I've emptied the individual ziplock bags, and before I would use a new one. And I don't worry about moisture build up in the bags because it's not my intentions to save or collect fabrics. And should I have my own garage sale or tag sale, the fabrics are kept in the bags when I put them out for sale. It's an assurance that I provide to buyers, that indicate that I don't have an infestation in my sewing room.
I hope this information is helpful to someone who has more fabrics that they are able to use in the near future.
Pest & sticky glue strips
I'm all for getting rid of pest, no matter how. And if sticky glue strips do the trick, so be it.
Silverfish
I tend to see a lot of silverfish around my house. A home inspector advised me to get rid of wallpaper as much as possible throughout my home. I've done this and noticed it helped greatly. Apparently it's a delicacy for silverfish...
Glue traps
I am appalled that you would recommend glue traps to eliminate any pest. These are the most horrendous ways of dealing with "unwanted guests." No matter what the species, the creature, whether it is a silverfish or a mouse, gets stuck on the trap and spends a long time trying to get off it. In the meantime, it suffers greatly. Please to do not recommend these traps for any elimination of a pest.
Should a mouse, or other animal, get caught on a glue trap, it can suffer incredible pain in trying to free itself, as well as losing fur and sometimes skin. It may even try to chew off the appendage that is stuck. This kind of horror belongs only in horror movies, not people's homes. I beg you, please to not advocate the use of glue traps for any removal of a pest. There are better ways to get rid of silverfish, moths, mice, etc. I can not tell you how disturbed it makes me feel to think of a creature being stuck like this.
Sticky Traps
Thank you for expressing your concerns so passionately. We do NOT advocate the use of glue traps for vertebrate pests, such as mice and rats, under any circumstances. However, for invertebrate pests, there are sticky traps that contain pesticides, which ensures that the insect does not suffer for too long in the trap. We have edited the article to reflect this.
Sticky Traps
Always someone to complain. I would use it in heart beat. They are gross looking bugs.
Ant Traps work too.
I had an infestation in my garage of silver fish. I put out Ant Traps, that come already filled with insecticide and it killed all of the silverfish too, along with any ants that happen to come into the garage. I haven't had any since.
Glue traps
Oh good grief!!!! You bleeding hearts will be the destruction of the world. These pests are a health hazard to everyone. They make people & other animals sick (pain, death) so why be concerned with inflicting these pests. Get rid of these pests!
Silverfish
You are absolutely correct in your response! Thank you for your comment. I was thinking that I was the only person out here that really thinks.
Thank you again,
Josephine
Silverfish
Amen to that!
Bleeding hearts
I agree that a glue trap is nasty for mice and other small mammals. But for insects? Come on. That is ridiculous. I don't trust any bug that is in my house crawling around.