Silverfish are small, wingless insects with a distinctive silvery, fish-like movement, often found in damp, dark corners of homes and offices. While they don't bite or spread disease, they damage books, wallpaper, clothing, and stored paper documents, making them a persistent nuisance in libraries, offices, and archives across Kenya.
Common Types of Silverfish
Common Silverfish (Lepisma saccharina)
The most widespread species, silver-grey in color, typically found in bathrooms, basements, and kitchens where humidity is high.
Four-Lined Silverfish
Slightly larger with darker stripes along the body, often found in warmer, drier indoor environments such as closets and storage rooms.
What Attracts Silverfish
1. High humidity — Bathrooms, laundry rooms, and basements with poor ventilation create the moist conditions silverfish need to survive.
2. Starchy materials — Book bindings, wallpaper paste, cardboard, and cotton fabrics provide a food source rich in starch and cellulose.
3. Clutter and undisturbed storage — Stacks of old newspapers, boxes, and rarely-moved storage areas offer shelter and breeding grounds.
4. Dark, secluded spaces — Silverfish are nocturnal and prefer hiding in cracks, behind baseboards, and inside book shelves during the day.
How to Keep Silverfish Away
Reduce indoor humidity with proper ventilation or dehumidifiers, particularly in bathrooms and storage areas. Store books, documents, and clothing in sealed plastic containers rather than cardboard boxes. Vacuum regularly to remove eggs and food debris, and seal cracks in walls, baseboards, and around plumbing fixtures where silverfish can hide.
Why Professional Treatment Matters
Silverfish infestations often go unnoticed until damage to valuable documents, books, or fabrics has already occurred. Professional pest control technicians identify moisture sources and hiding spots throughout a property, apply targeted residual treatments and dust insecticides into wall voids and cracks, and recommend humidity-control measures to prevent recurrence — particularly important for offices, libraries, and archives with paper-based assets.
Silverfish thrive quietly in humid, undisturbed corners of homes and workplaces, often causing damage before they're noticed. Controlling moisture, minimizing clutter, and seeking professional treatment for persistent infestations protects both property and valuable paper or fabric items from ongoing harm.