What to do about spiders in your home
- Updated: December 15, 2025
Spiders are a common concern for many homeowners in the Miami Valley. While most spiders in southwestern Ohio are not dangerous, their presence inside the home causes stress, fear, and ongoing discomfort. Spiders enter homes in search of shelter, food, and stable temperatures. Once inside, they settle in quiet corners, basements, garages, and storage areas where they can feed on other insects. Understanding the risks spiders bring, how they behave locally, and the early signs of increasing activity helps you know when it is time to take action.
The problems spiders create inside your home
Most spiders do not bite unless threatened, and many species are actually beneficial outdoors because they feed on insects. Indoors, however, spiders become a nuisance. Their webs collect dust and insects, creating an unclean appearance in corners, basements, and ceiling edges. Some species, such as house spiders and cellar spiders, build multiple webs that quickly accumulate if not removed.
While dangerous bites are rare in southwestern Ohio, spiders can still bite if trapped against the skin. This causes itching, swelling, and irritation. The presence of spiders inside your home also suggests that other insects are present, because spiders go where their food supply exists. For homeowners, this often points to a larger underlying pest issue.
The stress factor is another concern. Many people experience fear or anxiety when spiders appear unexpectedly in bathrooms, bedrooms, or storage areas. Frequent sightings can make it difficult to feel comfortable in your own home.
Spider behavior patterns in the Miami Valley
Spiders are active year round in southwestern Ohio, but they become more noticeable in homes during late summer and fall. This is when outdoor temperatures begin to cool and insects move indoors, which attracts spiders looking for food.
Cellar spiders, house spiders, wolf spiders, and jumping spiders are some of the most common species in the region. Basements, garages, crawl spaces, storage rooms, and attic areas provide the dark, quiet, and cluttered environments they prefer. Wolf spiders often wander across floors in search of prey, while house spiders build webs in corners and remain in one place.
Weather has a major influence on spider movement. Extended rain, cooler nights, and seasonal insect activity all increase the likelihood of spiders entering homes. Gaps in foundations, torn screens, open garage doors, and cracks around utilities serve as easy entry points.
Signs that spiders have established themselves
The most obvious sign of spider activity is the presence of webs. Corners of rooms, ceiling edges, window frames, and basement rafters often collect multiple webs when spiders have settled in. Seeing spiders regularly in bathrooms, basements, or closets is another clear indication.
Other signs include:
• Egg sacs attached to walls, ceilings, or stored objects
• Increasing numbers of insects in the home, which attract more spiders
• Spiders appearing in multiple rooms rather than isolated areas
If you see wolf spiders or larger spiders wandering openly during the day, the indoor population is likely growing.
When you should take action
You should take action when you begin seeing spiders regularly, when webs keep reappearing, or when spiders show up in bedrooms, bathrooms, or living areas. Store bought sprays may kill individual spiders, but they do not address the insect populations that attract them. Without treating the underlying issue, spiders continue entering the home.
If you are finding egg sacs or seeing spiders of multiple sizes, it usually means they are reproducing indoors. This requires prompt attention before the population expands.
Homeowners should also act quickly if they find spiders near beds, children’s rooms, or high traffic areas. Spiders prefer undisturbed spaces, so their appearance in main living areas often signals growing pressure from nearby nests.
The right next step
If spiders are becoming a regular problem in your home, the best thing to do is contact Midwest Pest and Wildlife Control. We identify where spiders are entering, reduce the insect populations that attract them, and treat the areas where spiders hide and build webs. Professional service restores comfort, removes both spiders and their food sources, and keeps your Miami Valley home free from the ongoing stress of unwanted spider activity.