Decluttering for silverfish will not kill a single insect, but it takes away their food and hiding places and makes the cleaning that does help far easier. We learned this the hard way when long-tailed silverfish (Ctenolepisma longicaudata, also called gray silverfish) showed up in our home. Our problem was this species, not the common silverfish (Lepisma saccharina), and everything we describe from our own home is about long-tailed silverfish. This article covers what we cleared out, how we stored the things we kept, and why the vacuuming had to go on for months, alongside what the US Environmental Protection Agency (EPA), the University of California’s IPM program and the Norwegian Institute of Public Health (FHI) advise.
In our experience, cleaning alone does not end a long-tailed silverfish infestation that has already spread through a home. It still matters. UC IPM calls household dust and debris an important food source for silverfish and says routine cleaning helps provide effective control, and in our home it supported the treatment a pest control company used.
Why clutter makes silverfish harder to get rid of
The EPA puts it plainly in its pest control do’s and don’ts: clutter gives pests places to breed and hide and makes them hard to get rid of. The agency names stacked newspapers, magazines and cardboard as things to throw out. UC IPM’s Pest Notes on common silverfish and firebrats add that collections of magazines, papers and books give silverfish both food and shelter, and that household dust and debris are an important food source, so routine cleaning helps.
Long-tailed silverfish need very little to live on. According to FHI, even small amounts of breadcrumbs, flour, food scraps, dead insects and dry leaves can keep them going, and adults can survive a long time without food. A cluttered floor hides exactly that kind of debris, and every box or pile is one more spot your vacuum cannot reach.
Start with the floors
Our first goal was to make every room as clear and easy to clean as possible. We started by moving everything we could off the floors and then off other surfaces. We had just moved when we spotted the first long-tailed silverfish, so many of our belongings were still packed. We decided not to unpack most of the boxes, took out only what we needed day to day, and left the rest in the storage unit we had rented.
That choice turned out to matter for another reason. FHI lists self-storage facilities and parcel terminals among the likely routes for long-tailed silverfish and notes that they hitchhike easily with crates, cardboard boxes and furniture. If you have belongings in storage or have just moved, check boxes before you bring them inside. The EPA gives the same advice for packages and boxes in general. Unpacking into plastic bins and recycling the cardboard right away keeps one possible source out of your living space.
Get paper, cardboard and food scraps out of the house
Anything recyclable that attracts silverfish went out of our home immediately. That meant paper and cardboard recycling above all, because silverfish feed on paper and hide in cardboard. FHI notes that adults can manage on simple materials such as paper and wallpaper, although young ones need a more varied diet to grow into adults.
During the worst phase we stopped using our countertop compost bin altogether, since food scraps are exactly what keeps long-tailed silverfish going. Starchy foods such as potatoes and potato peels seemed to attract them most in our home. The EPA recommends storing food in sealed plastic or glass containers and putting garbage with food scraps in tightly covered trash cans. UC IPM gives the same tip for dry, processed foods in particular: keep them in containers with tight lids.
A big cleanout is also a good moment to go through your closets with a critical eye. Most of us find things we no longer need, and getting rid of them while you are already clearing the house saves you doing it twice. UC IPM recommends cleaning out closets, cabinets and storage containers periodically, and moving stored books and papers around now and then.
Store what you keep in clear, sealed bins
Our children’s crafts and drawings are mostly paper, and we were not going to throw them away. We stored them in tightly closing plastic bins with lids instead. We chose clear bins on purpose, so we could see what was inside without opening them. We did the same with every paper item we could not or did not want to part with.
A few things are worth checking when you buy bins:
- Lids that close tightly. A loose lid lets dust and insects in.
- Clear sides. You can see the contents, and you spot insects or droppings without unpacking.
- Stackability. Bins that stack neatly and firmly keep the floor clear.
- Easy to wipe clean. Smooth plastic is easier to clean than fabric or wicker, which matters when you are cleaning often.
Order is much easier to keep when everything has its own place. Drawer and shelf dividers in the utility closet and in drawers help create clear spots for things, so nothing ends up piled on the floor. In our experience with long-tailed silverfish, a clearer home also made everyday life easier: we found things when we needed them, and cleaning took less time.
Vacuum often, and mop less
Vacuuming was an essential part of our fight against long-tailed silverfish. FHI recommends vacuuming and dry mopping over wet cleaning, because dry methods keep local humidity down, and dry conditions give long-tailed silverfish fewer chances to reproduce. The two species differ here. UC IPM notes that the common silverfish needs a lot of moisture and suggests dehumidifiers and fans in closed spaces. According to FHI, long-tailed silverfish also thrive best at high humidity, but they cope better with dry conditions than the common silverfish does, which is why they turn up even in rooms without water pipes, floor drains or waste pipes.
FHI and UC IPM describe both species as nocturnal, and most people first spot them when they switch on a light at night. Our own observation was a little different: in our home, long-tailed silverfish did not seem to shy away from light as much, and we saw them in daylight too, while the common silverfish we have come across have usually scurried away as soon as the bathroom light went on. They also seemed much less tied to damp spots, which fits FHI’s note above, so in our view finding long-tailed silverfish does not necessarily mean your house has a moisture problem.
Eggs and young insects are easy to miss. UC IPM notes that silverfish lay their eggs in crevices, on cloth, or buried in food or dust, and FHI says newly hatched long-tailed silverfish are only about 2 mm (0.08 in) long. In our experience young long-tailed silverfish are so small and pale that you almost never notice them on the floor. That is why we cleaned every day at the start, vacuuming along baseboards, in corners and in the gaps under furniture.
Cleaning while a pest control company treats your home
If you hire a pest control company, ask how you should clean between visits before the first treatment. In our case we were not allowed to wash along the baseboards at all, only vacuum. Just before the next visit we could wash the floors again, including the treated areas. FHI explains why such instructions matter: if the bait is washed away, a follow-up treatment may be needed.
The EPA’s advice for hiring help is to ask the company to find and correct the source of the problem before applying pesticides, and to ask for baits and crack-and-crevice treatments where possible. It also tells you to keep children and pets away from treated areas and to write down the product name and EPA registration number. Whatever the company uses, the product label and the applicator’s instructions decide when and how you can clean treated spots.
How long you need to keep it up
Plan for months, not weeks. FHI says it takes time before every individual eats the bait, and that you may have to live with a small number of long-tailed silverfish for a period. The bait itself lasts: FHI reports that bait droplets kept working for at least 43 months, although the product label decides how often a treatment is repeated.
Our experience with long-tailed silverfish matches this. We still found dead ones a couple of months after a treatment, and early on we saw many of them. In our experience, keeping the floors clear and vacuuming regularly for several months was an essential part of getting rid of them, and letting things pile up again too soon would have given them new places to hide. FHI suggests small glue traps checked after a couple of weeks as a way to see where silverfish still move, which also tells you whether your routine is working.
Decluttering checklist for a silverfish problem
Steps marked “our experience” come from our own long-tailed silverfish problem. Everything else follows the EPA, UC IPM and FHI guidance described above.
| Step | What to do | Why |
|---|---|---|
| 1 | Clear the floors in every room | Makes daily vacuuming possible (our experience) |
| 2 | Recycle paper, cardboard and old magazines now | Food and hiding places (EPA, UC IPM) |
| 3 | Check boxes from storage or a move before unpacking | Boxes carry long-tailed silverfish (FHI) |
| 4 | Move kept paper items into clear, sealed plastic bins | Keeps items visible and protected (our experience) |
| 5 | Put dry food in containers with tight lids | Removes food (EPA, UC IPM) |
| 6 | Use covered trash cans and pause the countertop compost bin | Removes food scraps (EPA, our experience) |
| 7 | Clean daily at first, vacuuming baseboards and corners, then keep it regular | Removes the dust and debris they feed on; dry methods keep humidity down (UC IPM, FHI, our experience) |
| 8 | Ask your pest control company for cleaning rules | Washing can remove bait (FHI) |
| 9 | Keep the routine going for several months | Control takes time (FHI, our experience) |
FAQ
Can cleaning alone get rid of silverfish?
Usually not, once they have spread through a home. Cleaning removes the dust, debris and food scraps they live on, and UC IPM says routine cleaning helps provide effective control. An established long-tailed silverfish population typically needs bait treatment as well, and FHI notes that control takes time even then.
Should I throw away cardboard boxes?
Recycling cardboard you do not need is a good idea. The EPA recommends getting rid of stacked cardboard, and FHI notes that long-tailed silverfish spread with cardboard boxes. Move the things you keep into sealed plastic bins.
Is vacuuming better than mopping for silverfish?
FHI prefers vacuuming and dry mopping because they keep humidity low. If a pest control company has applied bait, follow its instructions on washing treated areas, since water can remove the bait.
Sources
- US Environmental Protection Agency (EPA): Do’s and Don’ts of Pest Control, updated May 5, 2026. https://www.epa.gov/safepestcontrol/dos-and-donts-pest-control
- University of California Statewide IPM Program: Pest Notes: Silverfish and Firebrats, Publication 7475, M.K. Rust and M.R. Millard, 2009. https://ipm.ucanr.edu/PMG/PESTNOTES/pn7475.html
- Norwegian Institute of Public Health (FHI): Long-tailed silverfish, Pest control guide (Skadedyrveilederen), updated May 4, 2026. https://www.fhi.no/en/op/skadedyrveilederen/other-insects/long-tailed-silverfish
Sources checked 11/2026.