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A Good Housekeeping report citing pest-control specialists identifies letting moisture linger indoors as a habit that can create conditions favored by silverfish and some other pests. Experts recommend ventilating after showers, managing indoor laundry, addressing leaks and mould, and sealing entry gaps without blocking airflow.
A Good Housekeeping report citing pest-control specialists says the household habit most likely to make a home more welcoming to silverfish is letting moisture linger after everyday activities such as showering or drying laundry indoors. Experts recommend improving ventilation and addressing persistent damp, steps that may also help limit condensation, musty odors and mould.
Ricky Young, owner of Youngs Pest Control, told Good Housekeeping that silverfish are encouraged by moisture that accumulates and remains indoors. He pointed to steamy bathrooms, wet laundry dried without adequate ventilation and extractor fans that are not used as examples. Silverfish favor dark, humid areas, he said, 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 humidity can rise in winter, while laundry drying inside adds more moisture to the air. Silverfish do not eat moisture: the report says they prefer humid, sheltered places and feed on starchy materials, including paper, cardboard and glue.
Thorogood also cautioned that damp does not attract every pest in the same way. Some insects, including plaster beetles and booklice, may be found in damp places because they feed on mould or mildew growth. The report says mould can develop in places such as a bathroom wall or near a leaking pipe, and may also be associated with old food in a cupboard.
Reducing Damp Can Remove Pest-Friendly Conditions
Controlling moisture matters because it addresses conditions that can support silverfish and some other insects, rather than relying only on repellents after pests appear. The report does not establish that damp alone causes an infestation or that moisture reduction will eliminate pests, but the experts describe drying and ventilating rooms as practical prevention steps.
The advice may also help households dealing with condensation, musty smells and mould. Persistent damp can have causes beyond daily habits, however, including leaks or inadequate ventilation. If moisture repeatedly returns, finding and fixing the underlying source is more useful than treating the surface alone.
Thorogood said scented repellents marketed for insects are generally ineffective and are not used in professional pest control because of their limited effectiveness. That makes moisture management and basic home maintenance the report’s central recommendations, rather than relying on fragrances to address the problem.
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Why Homes Get Damp in Colder Months
The report links seasonal pest concerns to changes in weather and household routines. People may keep windows closed as temperatures fall, while showers and indoor laundry introduce moisture. When ventilation is limited, condensation can form and humid spaces may become more suitable for pests that favor damp, sheltered areas.
Silverfish are not the only insects or household pests mentioned in the report. It says spiders, flies, mice, moths and other insects may also become more noticeable or move indoors as weather changes. That does not mean all are attracted by moisture: the report specifically distinguishes insects that feed on mould from silverfish, which use damp areas as shelter and seek starchy 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, quoted by Good Housekeeping
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What Moisture Control Cannot Guarantee
The supplied report does not provide measurements of how much humidity reduction is needed to deter silverfish, nor does it quantify how much any one household measure changes infestation risk. It also does not claim that moisture is the sole cause of pest activity: access to food, shelter, entry points and the type of pest can matter.
It is unclear how widespread the problem is, since the source provides no survey data or comparison between homes. Advice to ventilate or use a dehumidifier is general; the report does not specify a target indoor humidity or a one-size-fits-all setting. Homes with recurring damp may need an inspection to identify leaks or other building issues.
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Practical Steps for Damp-Prone Rooms
After showering, run the extractor fan during use and for 15–20 minutes afterward, as Young advises, and open a window when practical. Dry towels and bath mats where air can circulate; Thorogood advises against covering radiators with damp washing because it adds moisture to indoor air. Where laundry must dry inside, consider a dehumidifier in persistently damp rooms, while maintaining airflow.
Check for condensation and leaks, and address mould promptly. The report advises taking action when mould appears, but it does not give product-specific cleaning instructions; follow product labels and seek appropriate help for extensive or recurring mould. Seal small gaps around windows, doors and skirting boards where practical, while keeping vents and necessary airflow clear. If damp continues, investigate its source rather than relying on repellents alone.
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Key Questions
What household habit can encourage silverfish?
The report identifies letting moisture build up and linger as the key habit. Steamy bathrooms, indoor laundry without enough ventilation and unused extractor fans can contribute to humid conditions.
Do silverfish eat moisture?
No. The report says silverfish favor humid, sheltered places but feed on starchy materials, such as paper, cardboard and glue.
How long should a bathroom fan run after a shower?
Ricky Young recommends running the extractor fan during a shower and for at least 15–20 minutes afterward. Opening a window can also help when practical.
Will scented insect repellents solve a silverfish problem?
Thorogood told Good Housekeeping that repellents claiming to prevent insects are usually ineffective. The report recommends addressing moisture, ventilation and entry gaps instead of relying on scented products.
What if a room keeps getting damp?
Check for recurring condensation or a leak and improve ventilation where possible. The report says a dehumidifier can help in persistently damp rooms, but if moisture keeps returning, the underlying cause should be investigated.
Source: rss
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