Silverfish season arrives in UK bathrooms

As summer turns to autumn, UK households are reporting an uptick in silverfish activity, with August and the late summer months marking peak season for the wingless insects. According to recent data, online searches for how to get rid of silverfish have risen by 15% over the last quarter, reflecting growing concern among residents.

Silverfish thrive in humidity levels between 55% and 70%, conditions commonly found in British homes, particularly in bathrooms and kitchens. The UK's naturally damp climate provides an ideal environment for these resilient insects, which can survive for many months without food.

Why silverfish are a nuisance

While silverfish pose no direct threat to humans, they can cause significant damage to household belongings. Their diet includes household paper, wallpaper adhesive, pantry dry goods such as flour and oats, and natural fabrics like cotton, silk, and linen. They also feed on dead insects. Infestations often leave behind telltale signs, including droppings, shed skin, and damage to books, wallpaper, and textiles.

Expert tips to deter silverfish

Sam Davies, Director at Age Care Bathrooms, has shared practical advice for homeowners looking to keep silverfish at bay. Central to his guidance is moisture control. "Silverfish thrive in damp environments, which means bathrooms can provide the perfect conditions for them to hide and breed," Davies said. "Taking a few seconds to wipe down wet surfaces, especially around shower trays, baths and sinks, is a simple way to keep your bathroom drier between uses."

Beyond wiping down surfaces, Davies recommends washing and drying bath mats regularly. "Bath mats can quickly become a warm, sheltered space for silverfish to hide, especially when they are left damp," he said. "Hanging your bath mat over the bath or shower rail after use can help it dry faster and remove a potential hiding spot for pests."

Ventilation is another crucial factor. Davies advises running extractor fans for 15 to 20 minutes after showering and keeping them well-maintained. "It is also important to clean your extractor fan every few months and check it is working effectively, as dust and dirt build-up can reduce how efficiently it removes damp air," he said. For bathrooms without strong extraction, opening a window or leaving the door ajar can help prevent moisture from becoming trapped.

Homeowners with persistent humidity problems may consider using a dehumidifier. Additionally, Davies recommends inspecting for hidden leaks, as silverfish are drawn to consistent moisture. "A small leak under a sink, behind a toilet or around pipework can create the perfect hiding spot," he said.

Sealing gaps around pipes and fittings and replacing cracked or damaged silicone around baths and showers can also help. Davies advises against storing cardboard and paper products in bathrooms, as silverfish feed on the starches found in these materials. Storing items in airtight containers and reducing clutter can provide extra protection by limiting potential hiding spots.

Recognising the signs of an infestation

Identifying a silverfish problem early can prevent more extensive damage. Regular sightings in dark, damp areas, small black droppings, and visible damage to paper or fabrics are common indicators. While a single sighting may not signal an infestation, repeated appearances or signs of activity warrant attention.