Finding centipedes in the house can be disturbing, especially when they travel quickly across a floor or wall. The good news is that safe centipede removal usually starts with basic steps. Reduce moisture, clear away hiding spots, seal cracks and gaps, and address the small insects that centipedes hunt.
The house centipede is the species most often found indoors. It prefers damp, quiet 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. Frequent 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 control centipedes safely. It focuses on non-toxic pest control, moisture control, exclusion, and cautious use of products. These steps support pest prevention without putting children, pets, or household members at avoidable risk.
Reasons Centipedes Get Into Canadian Homes
A house centipede moves into 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 give 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 prefer. 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.
Are House Centipedes Dangerous?
House centipedes are not known for spreading disease in homes. Their presence can feel alarming, but they usually avoid 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 small 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 little harm, 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 reducing centipede activity.
Ways to Remove Centipedes Without Risk
For one or two visible centipedes, removing them by hand is often enough. Avoid touching the insect, and do not crush it against a surface if you can avoid contact.
- Use a vacuum cleaner with a hose attachment to remove the centipede from floors, walls, corners, and ceilings.
- Empty the vacuum canister outdoors, or seal and discard the vacuum bag if the machine uses bags.
- For a slow-moving centipede on a hard surface, place a glass over it and push stiff paper underneath.
- Take the glass and paper outside, then let go of the insect away from doors and foundation walls.
- Wear gloves when handling boxes, wood, stored materials, or other items from damp areas.
Glass and paper removal lets you stay in control without spraying a chemical. It also lets you inspect 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, use the vacuum cleaner instead.
Safe disposal matters. Do not leave a bag of vacuumed insects inside the home. Seal it before placing it in household waste. Clean the vacuum attachment according to the manufacturer’s directions if you suspect a larger centipede infestation.
Reduce Water Vapour and Moisture Levels Indoors
Moisture control is one of the best ways to discourage centipedes. A dehumidifier can reduce 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 monitor conditions. The ideal setting varies by season and building, but persistent condensation and musty odours indicate that humidity reduction deserves attention.
Inspect for water leaks under sinks, behind toilets, around washing machines, near water heaters, and beside foundation walls. Fix 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. Allow airflow around stored items. Avoid pushing boxes tightly against basement walls, since this can trap damp 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 assess drainage, vapour barriers, insulation, or sump equipment.
Close Entry Points Around the Home
After moisture is under control, seal cracks and gaps that let centipedes get inside. Start 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. Choose a product suited to the surface and follow its curing instructions. Do not seal an active water leak before repairing its source.
Install weatherstripping around exterior doors that show visible light or let in a draft. A properly fitted door sweep can seal 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 allowing the ventilation system to work as designed.
Foundation cracks deserve careful 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 reduce entry by spiders, ants, flies, and other pests that can become food for centipedes.
Remove Food Sources and Hiding Places
Centipedes settle where prey and shelter are available. To reduce food sources, inspect areas where silverfish, spiders, cockroaches, ants, and other insects may shelter. A centipede sighting can be a useful clue that these pests are active nearby.
Reduce indoor pests by storing food in sealed containers, cleaning crumbs, wiping spills, and taking out waste regularly. 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 create hiding places and indicate that other insects are nearby. Remove webs from corners, window wells, storage rooms, and basement ceilings. This does not remove every insect, but it helps you track activity and restrict shelter.
Remove 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 a visual review 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 presence.
Centipede Control Using No Pesticides
Non-toxic pest control works best when you combine several small actions. Sticky traps can help identify where centipedes pass. Place them along basement walls, behind appliances, near storage areas, and beside suspected entry points. Keep traps away from children and pets, and inspect them often.
Physical removal is suitable for occasional sightings. A vacuum cleaner picks up visible insects without leaving pesticide residue. Follow this method with moisture reduction and sealing work so more centipedes do not replace the ones you remove.
Diatomaceous earth may help in see this page 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 targets the conditions that support the pest.
A practical plan may look like this:
- Track 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.
- Inspect the area after one to two weeks.
This process helps you distinguish a one-time visitor from recurring centipede sightings. It also reduces the chance that you will apply a product without addressing the cause.
Using 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, verify that the product is registered for the intended use. Health Canada oversees pest control products and provides registration information. A domestic-class pesticide is designed for use by household consumers, but it still requires safe handling.
- Review the full label before opening the package.
- Obey label directions exactly, including dilution and application limits.
- Maintain children and pets away from treated areas as directed.
- Remove or cover food, dishes, pet bowls, toys, and bedding before treatment.
- Do not apply outdoor products within the home.
- Do not mix products unless the label specifically permits it.
- Store products in their original containers, away from heat and food.
Approved pest control products can pose risks when used incorrectly. More product does not mean more effective 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 needs.
Mosquito Man is one business name a homeowner may see when researching pest services. Confirm the provider’s licence, insurance, treatment details, and safety instructions before agreeing to work.
When to Reach 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 find 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 outward sign.
A suitable pest management plan may involve repairs, monitoring, sanitation, exclusion, and professional treatment. The plan should explain what will happen before, during, and after service. It should also state 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 puts prevention and physical controls before routine chemical application. If a treatment is needed, the professional should use the least-risk method that fits the site and the pest.
Professional treatment is especially useful for a large 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.
Frequently Asked Questions
How do I keep centipedes out of my Canadian home?
Lower moisture, repair water leaks, improve ventilation, and use a dehumidifier where indoor humidity stays high. Close 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 provide 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 offers 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 indoors in Canada?
Moisture, moist air, cool hiding places, and prey attract centipedes indoors. They may get inside through cracks in the foundation, openings around doors and windows, openings around pipes, or damaged screens. Their presence can also signal prey insects such as cockroaches, silverfish, spiders, ants, and flies. Remove food sources and fix damp conditions rather than relying only on sprays.
How can I manage centipedes without using pesticides?
Use a vacuum cleaner for visible insects, removal with glass and paper when practical, sticky traps for monitoring, and careful physical removal. Reduce humidity with ventilation and a dehumidifier, repair water leaks, clear clutter, and seal cracks and gaps. Diatomaceous earth may be appropriate in limited dry areas when the label permits it and exposure is controlled. Integrated pest management brings together these methods to support non-toxic pest control.