Warning over critters that could be hiding in your bathroom after spike in cases

A warning has been issued to homeowners after a spike in cases of a nasty pest in homes around Ireland.

Rentokil has recorded a 12% increase in the reporting of silverfish nationally since January this year, compared to the same period (January-October) in 2022.

The company is warning home and business owners to be vigilant of these nocturnal pests over the winter months as they are typically more prevalent during colder periods. Silverfish can lay up to 60 eggs per day, so a small number of insects can quickly become a much larger infestation.

Home and business owners are most likely to find silverfish in dark, damp, and humid areas such as bathrooms or washrooms, basements, and attics. Silverfish are nocturnal insects that are silver or grey in colour, measuring approximately 10-12mm in length with tiny scales, two antennae, and they have a tapered, tail-like appearance.

Silverfish eggs are usually difficult to locate, as they are often hidden in tiny cracks or crevices. An infestation can result in damage to books, photographs, paintings, plaster and other household items as they feed on both starch and cellulose. They also feed on human debris such as dead skin and hair.

A common sign of the presence of silverfish to watch out for is finding unexplained holes in books or items of clothing.

Dr Colm Moore, Area Technical Manager for Rentokil said: “Like many pests during colder periods of the year, silverfish move indoors to seek shelter and warmth inside homes and businesses. While silverfish are not dangerous, they can become a major inconvenience because of their appetite for starch and cellulose, which can lead to them damaging valuable items by feeding on them. Members of the public can find out more about silverfish on the Rentokil website.”

Rentokil advises the following tips to reduce the likelihood of a silverfish infestation in your premises:

Deny them food by vacuuming and keeping dust and debris to a minimum.

Store food in containers with tightly sealed lids.

Homes and businesses should also dehumidify their premises using fans, dehumidifiers, or by opening windows to air them out.

Make sure all cracks in walls and skirting boards are filled.

Proof door surrounds to ensure they have a good seal, particularly along the bottom of the door.