If you’ve noticed more spiders showing up inside your home over the past few weeks, you’re not alone. Every spring across Kansas and Missouri, homeowners start seeing spiders in bathrooms, basements, closets, and corners that were empty all winter.
There’s a reason for it. And while most of those spiders are completely harmless, Kansas and Missouri are home to one species you need to take seriously.
Why Spiders Show Up Indoors Every Spring
Spiders don’t suddenly appear out of nowhere in April and May. Most of them have been in or near your home all winter, tucked away in quiet, undisturbed spots. When temperatures warm up, they become more active. They start moving around, looking for food, mates, and better shelter.
At the same time, warmer weather brings an increase in the insects that spiders feed on. Ants, flies, beetles, and crickets all become more active in spring. More food draws spiders out of hiding and into the parts of your home you actually use.
Spring is also mating season for many spider species. Males in particular tend to wander more during this time, which is why you’re more likely to spot one crossing your wall or floor between April and June.
The short version: the spiders were probably already there. You’re just seeing them now because spring woke everything up.
The Spider You Need to Watch For: The Brown Recluse
Kansas sits right in the heart of brown recluse territory. According to K-State Extension Specialist in Entomology Jeff Whitworth, the brown recluse is likely the most common indoor spider in Kansas. They’ve been found in homes across the state, from basements and garages to closets, attics, and storage boxes.
One well-known study published in the Journal of Medical Entomology documented over 2,000 brown recluse spiders collected from a single occupied home in Lenexa, Kansas, over a six-month period. The family living there had no idea the infestation was that large.
Brown recluse spiders are small, typically about the size of a quarter, with their legs extended. They’re light to medium brown with a dark violin-shaped marking on their back, which is why they’re sometimes called fiddleback spiders. Unlike most spiders, which have eight eyes, the brown recluse has only six, arranged in three pairs.
True to their name, they’re reclusive. They hide in undisturbed spaces: cardboard boxes in the basement, shoes you haven’t worn in months, behind picture frames, inside folded clothing, and in the back corners of closets. They don’t build the classic round webs you see in doorways. Their webs are loose, irregular, and messy.
Brown recluse bites are a real concern. Their venom is hemotoxic, which means it breaks down tissue around the bite site. Bites often aren’t felt right away, but within 6 to 12 hours, the area can become red, swollen, and painful. In serious cases, the skin around the bite can deteriorate, leading to a slow-healing wound that may require medical attention.
That said, brown recluse spiders are not aggressive. They typically only bite when trapped against skin, like when you put on a shoe or shirt they’ve crawled into. The risk is real, but awareness and prevention go a long way.
Common House Spiders: The Ones You Don’t Need to Worry About
Not every spider in your Kansas home is a brown recluse. The majority of spiders you’ll encounter indoors are harmless species that are actually helping control other pests.
- Common house spider. Small, brownish-gray, and usually found in corners, windowsills, and basements. They build the classic cobwebs you see in the upper corners of rooms. Completely harmless.
- Wolf spider. Larger and faster than most house spiders, wolf spiders are brown and hairy. They don’t build webs and prefer to hunt their prey on the ground. They can look intimidating, but their bite is not medically significant.
- Cellar spider (daddy longlegs). Thin, delicate, with extremely long legs. Found in basements, garages, and crawl spaces. They build messy webs in dark corners. Completely harmless.
- Jumping spider. Small, compact, and often brightly colored or patterned. They move in quick, short jumps. You’ll find them on walls and windowsills. Harmless, and actually among the most effective insect hunters in your home.
How to Tell the Difference
The easiest way to distinguish a brown recluse from other spiders:
- Look at the color. Brown recluse spiders are uniformly brown. If the spider has stripes, bands, patterns, or color variations on its legs or body, it’s probably not a recluse.
- Look for the violin. The dark violin-shaped marking on the back of the head area is a strong indicator, though it can be faint on younger spiders.
- Check the web. If the spider is sitting in a well-defined, organized web, it’s almost certainly not a brown recluse. Recluses build loose, irregular webs and are often found away from them.
- Check where you found it. Brown recluse spiders prefer dark, quiet, undisturbed areas. If the spider is out in the open on a windowsill or in a visible web, it’s more likely a house spider.
When in doubt, don’t handle it. Take a photo if you can and contact a professional.
What You Can Do to Reduce Spiders in Your Home
There are several things you can do on your own to make your home less inviting to spiders this spring.
Reduce clutter, especially in basements, garages, attics, and closets. Cardboard boxes are a favorite hiding spot for brown recluse spiders. Switching to sealed plastic bins removes easy shelter.
Shake out shoes, clothing, and towels that have been sitting undisturbed. This is one of the most effective habits for avoiding brown recluse bites.
Seal entry points around your home. Check for gaps around windows, doors, foundation cracks, and where utility lines enter the house. If insects can get in, spiders will follow.
Keep the perimeter of your home clean. Move woodpiles, leaf litter, and debris away from the foundation. Trim vegetation that touches the exterior walls.
Use sticky traps in areas where you suspect spider activity. Place them along walls in closets, basements, and garages. They won’t eliminate a population, but they’ll help you gauge how active the problem is.
When To Call Green Pest Solutions
DIY prevention goes a long way, but it has limits. If you’re finding brown recluse spiders regularly, or if sticky traps are catching multiple spiders over a short period, don’t wait for the problem to get worse.
Research from K-State has shown that brown recluse spiders are not consistently controlled by over-the-counter pesticides alone. That’s where Green Pest Solutions comes in.
We offer targeted spider control solutions built around your specific space. We inspect your home, identify problem areas, and create a personalized management plan focused on the species causing the issue. Our Pest-Free, Worry-Free Guarantee means we’ll come back, even outside of normally scheduled visits, at no cost to you until the problem is resolved.
Contact Green Pest Solutions today at 785-596-0446 (Topeka), 913-407-1600 (Lenexa), or request your free estimate.
