Those who discover small, quick insects in the bathroom, office, warehouse, or living space often immediately think of silverfish. Colloquially, they are also called silverfish. But it is not always actually this species. Increasingly, silverfish, that is, silverfish, are also appearing in buildings.
The main difference lies in the preferred habitat and potential damage. Common silverfish prefer moist, warm areas. Silverfish, on the other hand, can also thrive in dry rooms and can damage paper, cardboard, books, files, wallpaper, labels, and packaging.
For households, this is unpleasant. For businesses, property management, hotels, archives, offices, warehouses, and shipping areas, an infestation can also have economic consequences. Therefore, the rule is: first identify the species, then act specifically.
What are common silverfish?
Silverfish are small, wingless insects with elongated bodies, a silvery shiny surface, long antennae, and several tail appendages. They avoid light and are usually noticed when the light is turned on at night and the insects quickly disappear into cracks or under furniture.
Typical locations are bathrooms, kitchens, laundry rooms, basements, or poorly ventilated storage rooms. There, silverfish find moisture, warmth, and suitable hiding places. They feed on starch-containing materials, skin flakes, organic residues, paste, paper components, and tiny impurities.
Individual silverfish are often more an indication of increased humidity than a severe infestation. However, if the insects appear regularly, moisture sources, ventilation, condensation, leaking pipes, or damaged seals should be checked.
What are silverfish?
Silverfish resemble common silverfish but are usually slightly larger, duller in color, and have particularly long antennae and distinctive tail filaments. This often makes them appear somewhat "bristlier" than classic silverfish.
The crucial factor is their habitat: silverfish do not require permanently damp rooms. They can also appear in dry indoor areas such as offices, living spaces, archives, libraries, storage rooms, technical rooms, shipping areas, or behind shelves.
The main problem is their feeding behavior. Paper silverfish can eat cellulose-containing materials. These include cartons, books, files, stacks of paper, packaging, wallpaper, labels, and archived documents. Especially in businesses with stored goods, packaging materials, or important documents, any suspicion should be taken seriously.
Difference between Silverfish and Paper Silverfish: The Most Important Features
| Feature | Silverfish | Silverfish (paper silverfish) |
|---|---|---|
| Body color | silvery shiny | gray, matte to slightly brownish-silvery |
| Size | usually about 7–12 mm | usually about 10–15 mm |
| Body shape | elongated and narrow | elongated, often somewhat larger and stronger |
| Antennae | long | very long and conspicuous |
| Tail appendages | present, usually less noticeable | very long and clearly visible |
| Preferred environment | humid-warm | dry to moderately warm |
| Typical rooms | Bathroom, kitchen, basement, laundry room | Office, storage, archive, living spaces, shelves |
| Main problem | Indication of moisture, hygiene issue | Material pest of paper, cardboard, and packaging |
| Control | Reduce moisture, check hiding places | Identify infestation sources, inspect materials, use monitoring |
Silverfish in New Buildings: Why They Often Occur There
Silverfish are most often found in modern buildings, new constructions, or freshly renovated properties. This initially seems contradictory because pests are usually associated with older or damp buildings. However, the cause is often different with silverfish.
The insects can be introduced via building materials, packaging, cartons, or drywall. Especially gypsum boards, as well as their packaging and storage areas, can play a role. If infested materials are brought into a building, silverfish can later hide in joints, cavities, baseboards, wall connections, or behind fixtures.
New buildings also offer many suitable hiding places: drywall partitions, expansion joints, shafts, baseboards, cavities, and rarely moved materials. Since silverfish can also cope with dry conditions, they can persist there without a classic moisture problem.
This is especially relevant for property management companies, developers, hotels, offices, and commercial businesses. An infestation in a new building is not a sign of poor cleanliness but should be checked early before the insects spread further.
Recognizing Silverfish: Typical Signs
Silverfish mainly appear where moisture plays a role. If the insects are regularly seen in the bathroom, kitchen, basement, or laundry room, this is more typical of silverfish.
Other signs include condensation, damp corners, leaking silicone joints, poorly ventilated rooms, nearby drains, or consistently high humidity. In such cases, not only the visible insect should be controlled. It is more important to eliminate the cause.
Regular ventilation, sufficient heating, removing moisture, and sealing possible hiding places are helpful. In case of heavier infestation, suitable traps, monitoring products, or targeted control agents can be used.
Recognizing silverfish: Typical signs
Silverfish are often found in dry rooms. Typical locations are offices, warehouses, archives, living spaces, bookshelves, stacks of boxes, file areas, shipping zones, or new buildings with drywall.
A sign of silverfish infestation can be that the insects are not only found in the bathroom but also visible in several dry rooms. Finds in boxes, folders, stacks of paper, wallpaper areas, or behind baseboards also point to this species.
If suspected, not only individual insects should be removed. A systematic inspection of the surroundings is important. This includes joints, shelves, cardboard boxes, files, wall connections, cavities, and rarely moved materials.
Why silverfish are particularly problematic in commercial settings
In commercial enterprises, silverfish can cause more than just a visual defect. They can damage packaging materials, labels, boxes, documents, files, and stored paper goods. This especially affects warehouses, shipping areas, offices, archives, libraries, hotels, property management, and public institutions.
In sensitive areas, visible silverfish can quickly cause complaints. For customers, guests, tenants, or employees, they appear unhygienic, even if the infestation is not necessarily due to poor cleaning.
For businesses, a clear procedure is therefore important. Infestation sites should be documented, possible sources of introduction checked, and measures regularly monitored.
What helps against silverfish?
The focus with silverfish is on reducing moisture. Rooms should be regularly ventilated and adequately heated. Condensation, damp joints, leaking pipes, or poorly ventilated areas should be checked and eliminated.
Additionally, hiding places should be reduced. Cracks, joints, and gaps can be inspected and sealed if possible. Dust, crumbs, skin flakes, and organic residues should be regularly removed as they can serve as food for the pests.
In case of heavier occurrence, traps, monitoring products, and targeted control solutions are suitable. The key is application in the right places: along pathways, near hiding spots, and in affected rooms.
What helps against firebrats?
For firebrats, controlling humidity alone is usually not enough. Instead, possible infestation sources and hiding places should be checked. Especially important are boxes, shelves, paper storage, files, books, wallpaper areas, baseboards, and joints.
In commercial areas, incoming goods, storage zones, shipping areas, and rarely moved materials should be regularly checked. Cardboard boxes should ideally not be stored permanently directly on the floor or close to walls. A clean storage structure facilitates inspection and reduces hiding places.
Monitoring products and traps help make activity visible and better assess infestations. In case of heavier infestations, control should be systematic rather than spot treatment.
Common mistakes in pest control
A common mistake is confusing silverfish and firebrats. This leads to choosing measures that do not fit the species. Treating firebrats like silverfish and only reducing humidity often overlooks the actual source of infestation.
Equally problematic is removing only visible pests. Both species live hidden and are mostly nocturnal. Without inspecting joints, baseboards, boxes, shelves, and cavities, infestations often persist.
Lack of monitoring also makes control difficult. Without regular checks, it is hard to assess whether measures are effective or if the pests are spreading further.
Kaeferling Pro Silverfish Set against Silverfish and Firebrats
For targeted control and prevention of silverfish and firebrats, Kaeferling Pro offers a practical Silverfish Set. The complete set combines products for control, bait placement, and monitoring, making it suitable for clean and structured use in residential and commercial areas.
The set supports both acute infestations and preventive monitoring. The combination of bait, bait stations, spray, and glue traps allows targeted treatment and monitoring of infestation areas.
Advantages of the Kaeferling Pro Silverfish Set:
- Complete set against silverfish and paperfish
- Clean and safe application
- Control and prevention in one set
- Suitable for targeted indoor measures
- Combination of bait, bait stations, spray, and monitoring traps
Contents of the set:
- Advion Gel Bait – 1 × 30 g cartridge
- David Empty Bait Station White – 10 pieces
- Esca-Bar Bait Strip White – 10 pieces
- Deltasect Spray – 500 ml bottle
- Catchmaster 288i Glue Traps – 15 traps
For households and businesses, a clear approach is key: inspect infestation sites, place products strategically, monitor activity, and regularly check measures. This way, infestations can be managed systematically and further spread prevented.
Conclusion: Identify first, then act purposefully
Silverfish and paperfish look similar but differ significantly in habitat, risk, and control methods.
Silverfish mainly appear in damp rooms and often indicate increased humidity.
Paperfish also occur in dry areas, especially in new buildings or after drywall work, and can damage paper, cardboard, books, files, wallpaper, and packaging.
Those who can distinguish between silverfish and paperfish can assess infestations more quickly, choose appropriate measures, and avoid damage.
Discover the Kaeferling Pro Silverfish Set now and effectively combat and prevent silverfish and paperfish – for a clean, safe, and organized application in your home, office, warehouse, or business.
