Is a Spider Setting off Your Burglar Alarm?

The beginning of fall season has its perks. The temperatures become more comfortable, leaves begin changing color, seasonal menus return to our favorite cafés, and it is the perfect time for evening walks and cozy nights at home with a new show to binge. Halloween also brings its own seasonal decorations: Pumpkins, ghosts, and of course, spiders and its webs appear on porches.

And as temperatures begin to drop, spiders and other insects may become more noticeable. In many species, mature male spiders are more active during this period as they search for females and suitable places to shelter. Some larger spiders can even move across or near alarm sensors, potentially triggering a motion detector.

A spider setting off your burglar alarm may sound unusual, but false alarms caused by insects, small animals and other unexpected movement can happen. Besides being frustrating for homeowners, repeated false alarms can create unnecessary calls to monitoring centers and, depending on local rules and the circumstances, could potentially result in monetary charges.

The good news is that a few simple steps can make your home less attractive to spiders while also reducing the chances of unwanted visitors crossing paths with your security system.

Turn Off Unnecessary Outdoor Lights

Outdoor lights can attract flying insects such as moths, flies and mosquitoes. Where there are insects, spiders may eventually follow because they have found a reliable food source.

If you routinely leave exterior lights on throughout the night for security, consider replacing traditional lights with motion-activated lighting. This allows you to maintain visibility when someone approaches while reducing the amount of time your exterior lights remain illuminated.

Another option is to use warmer-colored bulbs, which may be less attractive to some insects than traditional bright white lighting.

You can also reduce the amount of light escaping from indoors by closing blinds or curtains at night, particularly in rooms near doors and windows.

Try a Fresh Citrus Scent

If you enjoy fresh, clean scents, citrus-based cleaning products can be an easy addition to your regular household routine.

Some homeowners also use scents such as peppermint or eucalyptus as part of their spider-deterrent strategy. However, these methods shouldn’t be considered a guaranteed solution. Their effectiveness can vary, and keeping spiders out is generally more successful when scents are combined with physical exclusion and good housekeeping.

Instead of relying exclusively on a spray, concentrate on areas where spiders are most likely to enter or establish webs, such as window frames, doorways, corners and other undisturbed areas. If you use essential oils, follow the product’s safety instructions and keep them away from children and pets when appropriate.

Fill in the Gaps

One of the most effective ways to discourage spiders is also one of the simplest: don’t give them an easy way inside. Spiders can enter through surprisingly small openings. Inspect the areas around exterior doors, windows, utility penetrations, vents and other openings in the exterior of your home.

Pay particular attention to gaps beneath exterior doors, damaged or missing window screens, cracks around window frames, openings around pipes and utility lines, and gaps around garage doors. Installing or replacing door sweeps and weatherstripping can help close gaps underneath and around doors. Damaged screens should also be repaired or replaced.

Don’t forget bathroom windows. Bathrooms can provide the moisture and shelter that attract a variety of insects and spiders. Make sure screens fit properly and that windows close tightly.

Reduce Moisture Around the House

Spiders themselves aren’t necessarily looking for a wet bathroom, but the insects they prey on may be attracted to moisture. That can make damp areas appealing locations for spiders as well.

Check areas such as bathrooms, basements, crawl spaces, laundry rooms and garages for excessive moisture. A few practical steps include: Repairing leaking faucets and pipes, improving bathroom ventilation, and using a dehumidifier in damp areas. A drier environment can help make your home less attractive to many household pests.

 

Clear Away Spider Webs

Spiderwebs often appear in places that don’t receive much attention. High corners, behind furniture and other dark areas can easily become permanent spider real estate. Removing webs can discourage spiders from settling in an area, while also giving you an opportunity to identify possible entry points.

Use a vacuum or long-handled duster to remove webs from hard-to-reach areas. If you’re moving boxes, furniture or other objects that have been sitting untouched for a long time, wear gloves and exercise caution. Most household spiders are harmless and can actually help control other insects. Still, there is little reason to handle an unknown spider with your bare hands.

Keep Clutter Under Control

Spiders prefer quiet, undisturbed spaces. Unfortunately, storage areas can provide plenty of them. Cardboard boxes, piles of clothing, firewood, unused furniture and stacks of miscellaneous items can all create hiding places for spiders and the insects they feed on.

Whenever possible, keep storage areas organized and elevated from the floor. Plastic storage containers with secure lids can be preferable to piles of open cardboard boxes, particularly in basements, garages and sheds. If you store firewood, keep it outside and elevated from the ground when practical, and avoid stacking it directly against your home’s exterior.

The goal isn’t to create a completely spider-free environment. Instead, you’re reducing the number of sheltered places where pests can establish themselves.

Consider Cedar as Part of Your Home Décor

Cedar is sometimes suggested as a natural spider deterrent because spiders are thought to dislike its scent. While there are plenty of claims about cedar keeping spiders away, the evidence for cedar furniture as a reliable spider-control method is limited.

Still, cedar can be a practical material in certain parts of the home. Cedar storage products, for example, can be useful for closets and other applications where the material is already appropriate.

There’s certainly no need to replace your entire living room just because you saw a spider. Instead, think of cedar as one possible component of a broader pest-prevention strategy rather than a guaranteed solution.

If you repeatedly experience unexplained alarms, contact your security provider so the system can be inspected and the cause identified. It may also be worth reviewing the placement and settings of motion sensors with a qualified security professional. Avoid making changes to security equipment yourself if doing so could compromise your home’s protection. After all, it might just be a spider setting off your burglar alarm.