Can Spiders Make You Sick? What You Need to Know
Seeing a spider skitter across your bathroom floor or tucked in a corner of the ceiling is enough to startle anyone — but is it something more serious? Many homeowners wonder: can spiders actually make you sick?
The short answer is: not usually — but it depends on the spider, and your reaction. Most spiders found inside homes are harmless and actually helpful, feeding on other pests like flies and mosquitoes. However, some species can pose health risks, and even harmless spiders can become a problem if they’re nesting in large numbers.
At Specter Pest Control, we’ve seen it all — from the occasional web in the window to full-blown spider infestations in basements and crawlspaces. Here’s what every homeowner should know about spiders and potential health concerns.
Most Spiders Are Harmless — and Helpful
First, let’s clear the air: the vast majority of household spiders are not dangerous. In fact, they’re often considered beneficial because they help reduce the population of other pests in your home.
Common house spiders like the American house spider or cellar spider (also known as “daddy longlegs”) are not aggressive and rarely bite. Even if they do, their venom is not dangerous to humans.
That said, having dozens of spiders in your home isn’t ideal — and their presence often signals an underlying pest issue, such as an abundance of insects drawing them in.
Which Spiders Can Be a Problem?
While rare, there are two spider species in the U.S. known for posing potential health risks:
1. Brown Recluse
- Appearance: Light brown with a violin-shaped marking on its back.
- Behavior: Very reclusive (hence the name), usually hides in undisturbed areas like attics, basements, or inside shoes.
- Bite Risk: Bites can cause tissue damage in rare cases. Symptoms may include pain, swelling, and in very rare instances, ulceration at the bite site.
2. Black Widow
- Appearance: Shiny black with a distinctive red hourglass on its abdomen.
- Behavior: Prefers dark, quiet areas like garages, sheds, and woodpiles.
- Bite Risk: Their venom is neurotoxic and may cause muscle cramps, nausea, or severe discomfort — but fatalities are extremely rare, especially with medical treatment.
If you suspect either of these spiders in your home, it’s best to avoid contact and call a professional.
Can Spider Bites Really Make You Sick?
In general, spider bites are uncommon and typically happen when a spider is accidentally trapped against the skin — say, in bedding, clothes, or shoes.
Most bites result in:
- Minor redness or swelling
- Itchiness or mild irritation
However, a small percentage of people may experience more intense allergic reactions, including:
- Headaches or dizziness
- Fever-like symptoms
- Spreading rash or swelling
If you ever experience serious symptoms or signs of infection, it’s important to seek medical attention quickly.
Why You’re Seeing More Spiders Indoors
Spiders don’t just randomly decide to move in — they follow food sources and environmental cues. If you’re spotting more spiders lately, here’s what could be going on:
- Increased insect activity (spiders go where the food is)
- Seasonal shifts, especially in fall when outdoor temperatures drop
- Cluttered areas like garages or storage rooms that offer shelter
- Moisture problems in basements or bathrooms
Specter Pest Control often finds that spider problems are a sign of a deeper pest issue — and solving that issue reduces both insects and the spiders that feed on them.
What You Can Do to Keep Spiders Out
Here are a few kid-safe, pet-safe ways to reduce spider activity at home:
- Seal cracks and gaps around doors, windows, and baseboards.
- Declutter closets, basements, and garages — spiders love quiet hiding spots.
- Keep outdoor lights off when not needed (they attract the bugs spiders eat).
- Reduce moisture in the home with dehumidifiers in damp areas.
- Vacuum regularly, including behind furniture and in corners.
Of course, prevention only goes so far if there’s already an infestation.
When to Call in the Pros
If you’re dealing with:
- Repeated sightings of spiders in multiple areas of the home
- Concerns about venomous species
- Webs in hard-to-reach or sensitive places (like kids’ rooms or beds)
- Ongoing insect activity feeding the spider population
…it’s time to bring in expert help.
At Specter Pest Control, we don’t just remove the visible problem — we dig deeper to uncover why spiders are showing up and how to keep them from coming back. Our methods are family-safe, modern, and tailored to residential homes — no harsh chemicals or outdated practices.
So — can spiders make you sick? Not usually, but it’s not a risk you want to ignore. The key is identifying the type of spider, understanding the conditions that brought it inside, and making smart choices about prevention.
If you’re tired of webs in the corners and want peace of mind that your home is safe, clean, and pest-free, we’re here to help.
