The One Habit That Attracts Silverfish And Other Fall Pests, And How To Put A Stop To It

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A Good Housekeeping report citing pest-control specialists identifies lingering indoor moisture as a habit that can make homes more hospitable to silverfish and some other pests. Experts recommend ventilating bathrooms, managing laundry moisture and addressing leaks or mold; dampness does not attract every pest directly, and repellents may not solve the underlying problem.

A Good Housekeeping report citing pest-control specialists says the household habit most likely to make conditions more favorable for silverfish is allowing moisture to linger indoors after showers, laundry or condensation. The experts recommend improving ventilation and addressing dampness, a practical concern as colder weather can lead to more indoor drying and closed windows.

Ricky Young, owner of Youngs Pest Control, told Good Housekeeping that bathrooms left steamy after showers, wet laundry dried indoors without ventilation and unused extractor fans can add to indoor humidity. He said silverfish favor dark, humid spaces, including bathrooms, kitchens, utility rooms and basements where condensation forms regularly.

Sophie Thorogood, a technical training manager and field biologist at Pelsis and a director of the National Pest Technicians Association, said indoor laundry can add moisture to the air during winter. Silverfish do not eat moisture: they rely on damp conditions and feed on starchy materials such as paper, cardboard and glue.

Thorogood also described a separate link between dampness and some other small pests. Plaster beetles and booklice can be found in damp areas because they feed on mildew and mold, she said. That does not mean moisture directly attracts every household pest; the report lists mice, spiders, flies and moths among pests that may also become more noticeable indoors as weather changes.

Why Indoor Humidity Can Matter

Managing moisture addresses conditions pests may use for shelter or survival, rather than relying only on sprays after insects appear. The same steps can also reduce condensation and musty smells, according to the report, and may help prevent mold growth. The advice is especially relevant for rooms with limited airflow, such as basements, utility rooms and bathrooms.

The report does not quantify how much any one measure reduces infestations, and it does not claim that moisture control alone will prevent pests. But if a home repeatedly becomes damp, checking ventilation and finding the source of moisture can address a factor that scented products may leave untouched.

How Fall and Winter Change Indoor Conditions

As temperatures fall, people may keep windows closed more often and dry clothes indoors. Shower steam, damp towels and laundry can then add moisture to rooms where airflow is limited. If condensation repeatedly forms, damp surfaces may support mold or mildew, which can provide food for certain insects, Thorogood told Good Housekeeping.

The report focuses on household prevention advice, not a survey of pest numbers or a formal seasonal forecast. It identifies silverfish as a common damp-associated visitor while noting that other pests may enter homes as the weather changes. The relevant distinction is that humidity can create favorable conditions for some species, but pests have different needs and food sources.

“The damp-room habit most likely to encourage silverfish is allowing moisture to build up and linger.”

— Ricky Young, owner of Youngs Pest Control

Limits of the Prevention Advice

The report provides expert guidance but no study data, infestation rates or comparison of prevention methods. It does not establish how much humidity is enough to prompt silverfish activity, or how quickly a particular intervention will change conditions. Individual results may depend on the source of dampness, building ventilation and the pests present.

Persistent dampness may come from a leak or another building problem, not just showering or indoor laundry. The report advises investigating moisture that keeps returning but does not give a diagnostic procedure or specify when a pest-control professional should be called. Its advice also does not establish that every pest found indoors is there because of humidity.

Steps Homeowners Can Take Now

Young recommends running the bathroom extractor fan during a shower and for 15–20 minutes afterwards, and opening a window when practical. Thorogood advises drying laundry outdoors where possible or using a dehumidifier, and avoiding damp clothes over radiators because they add moisture to indoor air. A dehumidifier may help in persistently damp rooms, but the report says it should support—not replace—good airflow.

Residents can also look for condensation and deal promptly with leaks or visible mold. Thorogood recommends sealing gaps around windows, doors and skirting boards while taking care not to block needed ventilation. If dampness continues to return, the underlying cause remains to be identified; the report gives no timeline for resolution or specific next pest-control action.

Key Questions

What household habit can make conditions more favorable for silverfish?

Allowing moisture to build up and linger, including after showers or while laundry dries indoors without ventilation, can create humid conditions silverfish favor, according to pest experts cited by Good Housekeeping.

Do silverfish eat moisture?

No. The report says silverfish rely on moisture and favor humid, sheltered spaces, but feed on starchy materials such as paper, cardboard and glue.

How long should a bathroom fan run after a shower?

Ricky Young recommends using the extractor fan during a shower and for at least 15–20 minutes afterwards. He also suggests opening a window where practical.

Will scented sprays or repellents fix a silverfish problem?

Not necessarily. Thorogood said scented repellents have limited effectiveness, and the report emphasizes addressing moisture and entry gaps rather than relying on fragrance while damp conditions remain.

What if dampness keeps coming back?

Check for an ongoing source, such as a leak or inadequate ventilation, and address it. The report recommends taking action when mold appears but does not set a specific threshold for calling a professional.

Source: rss