Silverfish Exterminator in Montreal
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Silverfish In your house?
Do you see small, silver, fish-shaped insects in your bathroom, basement, or kitchen at night? The silverfishSilverfish) generally indicates a moisture problem in the building and can damage books, papers, textiles, and wallpaper.
Contact an exterminator for targeted treatment and advice on moisture control.
Pest control specialist Silverfish
SilverfishSilverfishThe silverfish is a primitive insect 400 million years old that thrives in the dark, humid areas of buildings in Montreal. It is nocturnal, avoids light, and can live up to 8 years while reproducing continuously.
A silverfish infestation almost always indicates a moisture problem in the house: a leak, condensation, infiltration, or insufficient ventilation. Insecticide treatment must be combined with correcting the source of moisture to prevent their return.
✅ Precise identification – ✅ Health Canada approved – ✅ Anti-moisture advice
Why the silverfish it's so hard to get rid of
Silverfish can survive for months without food and are resistant to most common aerosol insecticides. Its slow reproduction (40-50 eggs per female) suggests elimination, but a single survivor re-colonizes the area in 6-12 months.
Our professional approach:
1. Wetland inspection (bathroom, basement, behind appliances, around plumbing).
2. Residual insecticide application in cracks, baseboards, behind fixed furniture.
3. Identification of Moisture Sources with recommendations for sealing, dehumidification, and ventilation.
4. Second visit if needed to check for effectiveness and absence of recurrence.
Insecticide gel treatment
Our treatment uses long-acting residual insecticides applied into cracks, baseboards, and conduits. Eco-friendly diatomaceous earth option available. No aerosols that would dry out without reaching hiding places.
Preventive inspection and sealing
Our technicians inspect cracks, entry points, wet areas and nesting sites. Where possible, we recommend sealing access points to greatly reduce the risk of reinfestation.
Targeted spraying and spot treatment
We apply professional products approved by Health Canada to strategic areas such as baseboards, cracks, garages, foundations, windowsills and other points of activity. Treatment is targeted to maximize effectiveness while limiting unnecessary exposure.
Long-lasting professional baits
Our Health Canada approved products are used in residential and commercial wet areas, libraries, and archives. Targeted application in cracks inaccessible to children and animals.
Why choose us
Why a silverfish specialist ?
Silverfish can damage valuable items: old books, photos, archived documents, wallpaper, natural fiber textiles, cardboard. An untreated infestation in a library or archive basement can cause irreparable losses.
Our goal: eliminate the infestation while protecting your belongings and correcting favorable conditions.
Our advantages:
🔬 Precise identification
Distinguish Silverfish from FirebratsThermobia domesticaand other silverfish allows for proper treatment.💧 Moisture Inspection
Source Identification (leak, condensation, infiltration) and concrete recommendations.💯 6-month written guarantee
Up to 2 visits and free returns in case of re-infestation.
Our method in 4 steps
Silverfish extermination involves four steps: identification, targeted insecticide treatment, moisture control, and prevention. Without addressing the source of moisture, the infestation will return in 6 to 12 months.
Recognize a Silverfish infestation
Physical characteristics
SilverfishSilverfishThey measure 12 to 19 mm as adults, with a body covered in silver scales that gives them their name.
- Size 12 to 19 mm long; ;
- Color silvery to pearl gray, shiny; ;
- Shape fish-shaped body, tapered, with 3 long, thin tails at the rear and 2 antennae at the front; ;
- Movement very fast, wriggling like a fish out of water; ;
- Activity nocturnal, light flees, hides under objects during the day; ;
- Reproduction 40 to 50 eggs per female, slow growth (3-4 months to reach adulthood), lifespan up to 8 years.
Signs of an infestation
- Small, fast silver insects in the bathroom, basement, kitchen at night; ;
- Irregular periods in the pages of books, papers, wallpaper; ;
- Excrement resembling small black peppercorns; ;
- Whitish mucus (abandoned skin) on shelves, behind furniture; ;
- Yellowish spots on books, stored clothing, or textiles; ;
- Concentration in wetlands behind toilet, under sink, crawl space, unheated basement.
What damage can The silverfish?
Silverfish feed on carbohydrates, starches, and cellulose: paper, books, photos, cardboard, natural fiber textiles, wallpaper, and bookbinding glue.
Most common types of damage:
- old books, archival photos, legal or accounting documents; ;
- wallpaper peeling off (the glue is eaten) ;
- old cotton, linen, or silk clothing in storage; ;
- cereal boxes, sugar, flour not airtight; ;
- Bookbinding glue for hardcovers.
For private libraries, family archives, or stamp/photo collections, prompt intervention prevents irreparable heritage loss.
Why the Professional treatment is essential
Consumer aerosol insecticides do not penetrate cracks where silverfish live. Professional treatment uses residual powders or granules that remain active for several months in harborage areas.
Our intervention includes:
- Comprehensive interior inspection (wet rooms + storage areas); ;
- Residual insecticide application in cracks, baseboards, and conduits; ;
- diatomaceous earth treatment (eco-friendly option) if requested; ;
- moisture source diagnosis ;
- Sealing and dehumidification recommendations; ;
- Second visit if needed.
Prevent the return of Silverfish
Silverfish prevention primarily involves controlling humidity — without humidity, there are no silverfish.
- maintain indoor humidity below 50 % with a basement dehumidifier; ;
- quickly repair any plumbing leak, roof leak, or condensation; ;
- Ventilate the bathroom during and 30 minutes after each shower ;
- Avoid storing cardboard boxes, old books, or papers in an unheated basement. ;
- Store precious books in airtight boxes with desiccant packets. ;
- vacuum regularly behind furniture, in baseboard crevices; ;
- Seal cracks around plumbing, windows, basement.
What what our customers say
Areas served
Our specialized team intervenes throughout the Greater Montreal area for infestations of Silverfish in houses, condos, apartment buildings, libraries, and offices.
Montreal: Ahuntsic, Villeray, Rosemont, Plateau, Saint-Léonard, Mercier, Anjou, Saint-Laurent, Hochelaga, Notre-Dame-de-Grâce.
Written guarantee against silverfish
Every professional treatment includes a 6-month written guarantee and up to 2 visits. Our approach combines insect elimination and advice on moisture control for sustainable protection.
Others pests we treat
In addition to silverfish extermination, we offer professional pest control services for several other pests in Montreal, Laval, on the North Shore and on the South Shore.
- 🪳 Cockroaches – Other wetland insects (kitchens, bathrooms).
- 🍯 Dust mites – Pantry and storage areas.
- 🐭 Mice and rats – Basements, crawl spaces, ducts.
- 🕷️ Spiders Basements and crawl spaces.
- 🪲 Bedbugs – Mattress and room parasites.
How much does it cost A silverfish extermination?
The price of silverfish extermination in Montreal usually ranges between $250 and $500 depending on the size of the affected area and the need to work in multiple rooms. Dampness diagnosis and follow-up visits are included.
Request your free submission (438) 835-8401.
Fair questions about silverfish
Visit silverfishSilverfishis a silvery, fish-shaped insect 12 to 19 mm long, with 3 long tails at the back and 2 antennae at the front. It moves by wriggling like a fish out of water, is strictly nocturnal, and flees from light. It is found mostly in damp areas: bathrooms, basements, behind appliances.
Silverfish thrive in damp and dark zones. Its presence almost always indicates a problem: plumbing leak, excessive condensation, insufficient ventilation, roof infiltration, or poorly ventilated basement. Elimination should always combine insecticide treatment and moisture correction.
No, they do not sting and do not transmit diseases. But they can cause allergic reactions to their molting in sensitive individuals, and damage valuable property old books, archives, photos, wallpaper, natural fiber textiles.
The price usually ranges between $250 and $500 depending on the number of affected rooms and the complexity of access. Humidity diagnosis and a second visit if needed are included.
Very little. Silverfish live in crevices inaccessible to aerosols and can survive for months without food. Glue traps catch only a tiny fraction of the population. Professional treatment with residual insecticide in the crevices + humidity control is necessary.
With professional treatment, visible activity decreases in 2 to 4 weeks. Complete removal takes 4 to 8 weeks since the developing eggs hatch progressively. A second visit, if needed, confirms efficacy.
Maintain indoor humidity under 50 % with a dehumidifier, repair any plumbing leaks, ventilate the bathroom, seal cracks around plumbing, avoid storing cardboard in damp areas, and keep valuable books in airtight containers.
Yes. Residual insecticides are applied in the fissures, plinths, and inaccessible areas. Diatomaceous earth is an eco-friendly, low-toxicity option. No surface treatments in children's living areas.
