House Centipedes: How to Keep Them Out of Your Home

A sudden glimpse of a very fast, long-legged centipede racing across a bathroom tile can alarm many people. Yet their numbers can be cut substantially with a surprisingly straightforward approach: a few consistent measures rather than harsh toxic chemicals.

What is actually scurrying through the home

The species most commonly found in flats and houses is the house centipede, scientifically known as Scutigera coleoptrata. It is the creature with an elongated, segmented body and exceptionally long, fine legs that gives many people goosebumps.

Although it may look threatening, the reality is quite different. This rapid runner is a predator rather than a pest. It does not eat food supplies, damage furniture or bore into fabrics.

“The house centipede hunts other insects and arachnids – which reveals that there is already plenty of prey in the home.”

Its usual prey includes:

• cockroaches
• silverfish
• small spiders
• ants and other crawling insects

So, anyone who regularly spots these long-legged creatures will generally have a wider insect issue in the background, even if it has gone unnoticed so far.

Why so many house centipedes appear in spring

Once winter has passed, these animals look for warmth and reliable conditions. Homes offer stable temperatures, few natural predators and plenty of hiding places. At the same time, other insects become active again in spring, providing the predator with a well-stocked food source.

They particularly favour spots that are damp, dark and as undisturbed as possible:

• cellars and lower-ground rooms
• bathrooms and utility rooms
• storage cupboards and spaces behind heavy furniture
• areas behind skirting boards and inside cracks

To keep the animals under control in spring, these comfortable habitats need to become less appealing. This is where the key measure comes in, as many other actions ultimately lead back to it.

The most important step: reduce humidity consistently

“Without moisture, the home becomes a desert for centipedes – and they will move on of their own accord.”

These creatures depend heavily on a humid environment. Once that setting is dried out, many simply lose the conditions they need to survive. The aim is therefore clear: less wetness, less condensation and less standing moisture.

How to put the “dryness trick” into practice

• Ventilate regularly: Air rooms briefly several times a day with windows fully open rather than leaving them tilted open for long periods, especially in bathrooms, kitchens and bedrooms.
• Wipe down wet surfaces: After showering, use a squeegee to dry tiles, shower screens and grout lines.
• Avoid piles of damp laundry: Do not dry wet clothes in small, dark rooms with very little air circulation.
• Use dehumidifiers: Place an electric dehumidifier or moisture-absorbing granules in cellars or rooms with few or no windows.
• Inspect moisture sources: Check cellar walls for mould patches, salt deposits or water marks.

People who take these measures seriously often notice a clear reduction within just a few weeks – not only in centipedes, but also in silverfish, woodlice and similar creatures.

Tidiness creates stress for crawling insects

Alongside dampness, the layout and condition of the home also matter greatly. Centipedes favour quiet areas where they are rarely disturbed. Stacks of cardboard boxes, old newspapers and crates filled with clutter all make ideal hiding places.

Useful measures include:

• Vacuuming and mopping regularly beneath sofas, beds and cupboards.
• Keeping cardboard boxes off the floor or getting rid of them.
• Avoiding overfilling open shelving.
• Reducing piles of old textiles, for example in the cellar.

“The fewer hiding places there are, the more stress the animals experience – and the more likely they are to look for a quieter place outside the home.”

No prey, no predator: get rid of other insects

Because centipedes hunt other insects, it is worth examining the conditions that support those insects. Reducing their prey deprives the predator of its food supply indoors.

Reducing the available food supply step by step

• Remove crumbs and food remains: Vacuum and mop thoroughly, particularly in the kitchen, children’s bedrooms and around the sofa.
• Keep bins closed: Use lids and replace bin bags regularly.
• Protect food sources: Store pet food and dry goods in airtight containers.
• Set monitoring traps: Sticky traps along common routes can reveal hidden cockroach or ant problems.

Those who prefer not to use chemical sprays in the home can apply household remedies in specific areas, such as vinegar solutions or certain essential oils that deter many insects.

Seal cracks to block entry into the house

These animals need only a gap a few millimetres wide to get indoors. Carefully inspecting both the exterior and interior of the building is worthwhile, especially in older properties.

Problem area	Possible solution
Gaps around skirting boards	Seal with acrylic or silicone
Cracks in masonry	Repair professionally or replaster
Exterior door gaps	Fit door seals or door-bottom seals
Draughty windows	Replace sealing tape

It is also worth inspecting the area immediately outside the building. Wood piles, heaps of leaves or damp potting compost directly against the wall create ideal temporary shelters. Moving these areas a little further away from the property or improving their ventilation reduces pressure on exterior walls.

Natural options for homes that avoid chemicals

Many people want to protect children and pets, so they are reluctant to use conventional insecticides. Alternatives are available that can be targeted and used in controlled amounts.

Diatomaceous earth and scent barriers

• Diatomaceous earth: This fine powder is harmless for people and pets but has a drying effect on insects. Apply a thin layer along possible routes.
• Essential oils: Peppermint, cedarwood and lemongrass are avoided by many insects. Add a few drops to water and spray the mixture along skirting boards or into corners.

Those willing to experiment can also try mixtures of bicarbonate of soda and sugar. These attract certain insects, which then disappear – taking away part of the centipedes’ food supply as a result.

When to call in a professional

In some homes, sightings continue to increase despite every effort. Poorly renovated older properties and very damp cellars, in particular, can quickly present limits. If the animals appear in large numbers, or there are also serious cockroach or ant infestations, contacting a pest-control professional can help.

“A specialist company can identify the real cause, develop a suitable strategy and advise on how to prevent future problems.”

Are centipedes really dangerous?

Many people wonder whether these animals sting or bite. The answer is usually reassuring: in Central Europe, the species that enter homes are virtually harmless to healthy adults. In extreme cases, they may cause mild skin irritation, but this happens far less often than a mosquito bite.

In most cases, the greatest “damage” is simply the fright of seeing one. Some people therefore choose to catch individual animals gently in a glass and release them outside. This works best when the dryness trick and the other measures described are also applied consistently, so the creatures cannot simply return through the next crack.

Practical combinations for a calm household in the long term

The approach is especially effective when several elements are combined: dry rooms, tidy corners, sealed gaps and fewer insects. Anyone building or renovating can consider effective ventilation systems, protection against rising damp and high-quality seals from the planning stage.

In existing flats, a combination of consistent ventilation, a simple dehumidifier in the problem room and a few tubes of sealant is often enough. Many readers report that they see almost no centipedes within a single spring once these basics are in place. The animals then simply have no reason to remain permanently and prefer a more comfortable hiding place in the garden or the cellar of a less well-prepared house.