Discovering centipedes in the house can be concerning, especially when they move quickly across a floor or wall. The good news is that safer centipede control usually starts with basic steps. Reduce moisture, remove hiding places, close cracks and openings, and control the small insects that centipedes hunt.
The house centipede is the species most commonly seen inside. It prefers dark, damp areas such as a basement, crawl space, bathroom, laundry room, or storage area. A single sighting does not always mean you have a centipede infestation. Recurring sightings, many shed skins, or regular activity in several rooms suggest that the home has good hiding areas, moisture, and prey.
This guide explains how to remove centipedes safely. It focuses on low-toxicity pest control, moisture control, exclusion, and careful product use. These steps support pest prevention without putting children, pets, or household members at unnecessary risk.
Reasons Centipedes Move Into Canadian Homes
A house centipede enters a home for three main reasons: prey, dampness, and shelter. Outdoor conditions can push these pests indoors through small openings around doors, windows, pipes, and foundations. Warm indoor spaces also provide protection during cold weather.
Centipedes do not eat wood, fabric, or stored food. They search for other insects and related pests. Their prey may include silverfish, spiders, cockroaches, ants, flies, and small larvae. If you see centipedes in the house frequently, the underlying issue may be a broader indoor pest problem.
Moisture plays a key role. A damp basement, wet crawl space, leaking pipe, or poorly ventilated bathroom gives centipedes the conditions they need. They may hide behind stored boxes, under appliances, near floor drains, or in cracks along walls and floors.
Inspect areas that stay cool and damp. Look under sinks, around sump pumps, beside water heaters, near laundry equipment, and along basement walls. Check for condensation, wet insulation, damaged seals, and water entering after heavy rain or snowmelt.
Can House Centipedes Harmful?
House centipedes are not generally linked to spreading disease in homes. Their presence can feel alarming, but they usually stay away from people and do not seek contact. They may help control some indoor pests because they feed on insects and spiders.
A centipede bite is possible, but it is rare. A house centipede has tiny jaws and usually cannot pierce human skin easily. If a bite occurs, it may cause temporary pain, redness, swelling, or itching. Wash the area with soap and water. Seek medical care if symptoms become serious, breathing problems develop, or the person has a strong reaction.
Pets may chase or eat a centipede. Most encounters cause minor problems, although a pet could experience temporary mouth irritation or stomach upset. Contact a veterinarian if your pet shows repeated vomiting, facial swelling, weakness, trouble breathing, or unusual behaviour.
Human health concerns often relate less to the centipede itself and more to the conditions that attract it. Damp areas can support mould and other pests. Fixing moisture problems protects your home as well as limiting centipede activity.
Removing Centipedes Without Risk
For one or two visible centipedes, physical removal is often enough. Keep your hands away from the insect, and do not squash it against a surface if you can prevent contact.
- Take a vacuum cleaner with a hose attachment to pick up the centipede from floors, walls, corners, and ceilings.
- Empty the vacuum canister outdoors, or close and throw away the vacuum bag if the machine uses bags.
- For a slow-moving centipede on a hard surface, set a glass over it and push stiff paper underneath.
- Carry the glass and paper outside, then set free the insect away from doors and foundation walls.
- Put on gloves when handling boxes, wood, stored materials, or other items from damp areas.
Glass and paper removal gives you control without spraying a chemical. It also lets you examine the area for moisture, webs, shed skins, and other insects. If the centipede is in a tight gap or an area that may contain other pests, vacuum it up instead.
Disposing of insects safely matters. Do not leave a bag of vacuumed insects inside the home. Tie off it before placing it in household waste. Wash the vacuum attachment according to the manufacturer’s directions if you suspect a larger centipede infestation.
Reduce Moisture and Moisture Levels Indoors
Controlling moisture is one of the strongest ways to prevent centipedes. A dehumidifier can bring down indoor humidity in a basement, crawl space, or other damp room. Empty the tank regularly, or connect a drain hose if the model supports one.
Aim for indoor humidity that feels comfortable and does not create condensation on windows or cold pipes. A basic hygrometer can help you track conditions. The ideal setting varies by season and building, but persistent condensation and musty odours indicate that humidity reduction needs attention.
Inspect for water leaks under sinks, behind toilets, around washing machines, near water heaters, and beside foundation walls. Repair small leaks quickly. A slow drip can keep a cabinet, floor, or wall damp for weeks.
Increase ventilation in bathrooms and laundry areas. Run exhaust fans during showers and for a short time afterward. Keep air moving around stored items. Avoid pushing boxes tightly against basement walls, since this can hold moist air and hide signs of water entry.
Check gutters, downspouts, grading, and exterior drainage. Water that collects beside the foundation can enter through weak points. If a crawl space remains wet after repairs, a building professional may need to inspect drainage, vapour barriers, insulation, or sump equipment.
Block Entry Points Around the Home
Once moisture is under control, seal cracks and gaps that let centipedes enter. Begin with the lower parts of exterior walls, doors, windows, utility openings, and areas where pipes pass through masonry.
Use caulking around fixed gaps in window frames, trim, pipes, and baseboards. Select a product suited to the surface and observe its curing instructions. Do not seal an active water leak before fixing its source.
Install weatherstripping around exterior doors that show visible light or let in a draft. A properly fitted door sweep can close the gap beneath a door. Keep the sweep in good condition, since worn rubber or brush material leaves an easy route indoors.
Inspect window screens for tears and loose edges. Fix or replace damaged screens, especially on basement windows and windows near damp ground. Check vent covers and make sure they fit tightly while still letting the ventilation system to work as designed.
Foundation cracks deserve close attention. Small gaps may need suitable masonry repair material, while larger or recurring cracks may point to movement or water pressure. Ask a qualified building professional to assess significant cracks, bowing walls, or ongoing seepage.
These exclusion steps support long-term centipede prevention. They also limit entry by spiders, ants, flies, and other pests that can become food for centipedes.
Eliminate Food Sources and Hiding Places
Centipedes settle where prey and shelter are available. To eliminate food sources, inspect areas where silverfish, spiders, cockroaches, ants, and other insects may gather. A centipede sighting can be a clear clue that these pests are active in the area.
Reduce indoor pests by storing food in sealed containers, cleaning crumbs, wiping spills, and taking out waste often. Repair plumbing leaks and remove damp cardboard. Silverfish often flourish in humid storage areas, while cockroaches may gather near food, water, heat, and appliance motors.
Spiders can make hiding places and indicate that other insects are present. Remove webs from corners, window wells, storage rooms, and basement ceilings. This does not remove every insect, but it helps you monitor activity and reduce shelter.
Clear clutter from floors and walls. Cardboard boxes, unused clothing, newspapers, firewood, and garden materials can provide dark spaces for centipedes and their prey. Store items in sealed plastic containers on shelves, leaving room for checking and air movement.
Keep outdoor materials away from exterior walls. Leaves, mulch, boards, and stacked items can hold moisture beside the foundation. A clear inspection strip makes it easier to spot cracks, gaps, damp patches, and insect activity.
Centipede Management Using No Pesticides
Chemical-free pest control works best when you pair several minor changes. Sticky traps can help show where centipedes travel. Place them along basement walls, behind appliances, near storage areas, and beside suspected entry points. Keep traps away from children and pets, and check them often.
Physical removal is suitable for occasional sightings. A vacuum cleaner removes visible insects without leaving pesticide residue. Follow this method with moisture reduction and sealing work so more centipedes do not take the place of the ones you remove.
Diatomaceous earth may help in low-moisture, protected cracks and gaps. Use only a product labelled for pest control, and follow the directions on the package. Avoid creating dust. Do not apply it where children, pets, or household members could inhale or disturb it. Never spread large amounts through living areas.
Integrated pest management combines inspection, monitoring, sanitation, exclusion, moisture reduction, and carefully selected treatments. It does not rely on spraying every centipede you see. Instead, it focuses on the conditions that support the pest.
A practical plan may look like this:
- Record where and when you see centipedes.
- Place sticky traps to identify activity zones.
- Fix water leaks and improve ventilation.
- Remove clutter and reduce indoor pests.
- Seal cracks and gaps after surfaces are dry.
- Recheck the area after one to two weeks.
This process helps you separate a one-time visitor from recurring centipede sightings. It also reduces the chance that you will apply a product without addressing the cause.
Applying Pest Control Products Safely in Canada
If home repairs and non-chemical methods do not control the problem, read the pesticide label before buying or applying any product. The pesticide label is a legal set of instructions. It states where the product may be used, which pests it controls, how much to apply, and what safety steps to follow.
In Canada, confirm that the product is authorized for the intended use. Health Canada oversees pest control products and assigns registration information. A domestic-class pesticide is designed for use by household consumers, but it still requires careful handling.
- Check the full label before opening the package.
- Use label directions exactly, including dilution and application limits.
- Maintain children and pets away from treated areas as directed.
- Take away or cover food, dishes, pet bowls, toys, and bedding before treatment.
- Do not apply outdoor products indoors.
- Do not mix products unless the label specifically authorizes it.
- Keep products in their original containers, away from heat and food.
Approved pest control products can pose risks when handled improperly. More product does not mean better control. Never spray mattresses, clothing, food preparation surfaces, or air vents unless the label clearly permits that use.
If you feel unsure about product selection, application, ventilation, or re-entry time, contact a licensed pest control professional. Ask what product class will be used, where it will be applied, and what preparation your household should complete.
Mosquito Man is one business name a homeowner may encounter when researching pest services. Verify the provider’s licence, insurance, treatment details, and safety instructions before booking work.
weblinkWhen to Contact a Pest Control Professional
Contact a professional if you notice a recurring infestation, centipedes in several rooms, activity that continues after moisture repairs, or signs of cockroaches and other prey insects. A professional can also help when centipedes are entering from a crawl space, wall void, foundation, or inaccessible drainage area.
A pest inspection should identify more than the visible insects. Ask the technician to check moisture, entry points, harborage areas, and the insects that centipedes hunt. A clear inspection helps prevent treatment that only addresses the visible problem.
A suitable pest management plan may include repairs, monitoring, sanitation, exclusion, and professional treatment. The plan should outline what will happen before, during, and after service. It should also list any preparation steps and precautions for children, pets, older adults, and people with respiratory sensitivities.
Ask whether the company uses integrated pest management. This approach sets prevention and physical controls before routine chemical application. If a treatment is needed, the professional should use the safest method that fits the site and the pest.
Professional treatment is especially useful for a high number of centipedes, hidden moisture, difficult access points, or a recurring pest problem that you cannot trace. Keep records of sightings and repairs. Photos can help the technician to understand patterns before the inspection.
Questions and Answers
How do I prevent centipedes out of my Canadian home?
Lower moisture, repair water leaks, improve ventilation, and use a dehumidifier where indoor humidity stays high. Fill cracks and gaps with suitable caulking, install weatherstripping around doors, repair window screens, and address foundation cracks. Remove clutter and reduce silverfish, spiders, cockroaches, and other prey insects. These steps create a practical centipede prevention plan.
Are house centipedes dangerous to people or pets?
House centipedes usually avoid people and are not known for spreading disease in homes. A centipede bite is uncommon and may cause temporary pain, redness, or swelling. Pets may have mild mouth or stomach irritation after eating one. Seek medical or veterinary help for severe swelling, breathing problems, weakness, or other serious symptoms.
Why are centipedes appearing in my basement?
Basement centipedes often appear because the area provides moisture, darkness, shelter, and prey. Check for damp walls, condensation, plumbing leaks, poor drainage, cardboard clutter, silverfish, and spiders. Use sticky traps to locate activity, then improve moisture control and seal entry points. A professional pest inspection can help find hidden sources.
What brings centipedes inside in Canada?
Dampness, humidity, cool hiding places, and prey draw centipedes indoors. They may get inside through cracks in the foundation, openings around doors and windows, pipe openings, or torn screens. Their presence can also signal prey insects such as cockroaches, silverfish, spiders, ants, and flies. Eliminate food sources and correct damp conditions rather than relying only on sprays.
How can I deal with centipedes without using pesticides?
Use a vacuum cleaner for insects you can see, removal with glass and paper when practical, sticky traps for monitoring, and careful physical removal. Lower humidity with ventilation and a dehumidifier, fix water leaks, clear clutter, and seal cracks and gaps. Diatomaceous earth may be appropriate in limited dry areas when the label permits it and you can control exposure. Integrated pest management brings together these methods to support non-toxic pest control.