You’re standing in your kitchen, barefoot and half-awake, when a massive brown blur streaks across the floor. Your heart skips a beat. Was that a tarantula? A recluse? Something worse?
While the fear is real (especially when the thing moves faster than your reflexes), the good news is that most of these big brown spiders are far less threatening than they look.
If you've been wondering, “Do I need to be worried?”, you're in the right place.
So take a deep breath. That big spider in your garage may not be your enemy, it might just be your home's most misunderstood guest.
What’s That Big Brown Spider in Florida? Learning the Basics
Photo Source -> National History of Orange County
When someone calls us in a panic about a “huge brown spider” in their Florida home, nine times out of ten, they’re talking about the Huntsman spider.
With a leg span reaching up to 12 inches, a flat, brown, hairy body, and the unsettling ability to move faster than your reflexes, it’s no wonder they startle even the toughest homeowners. But despite the shock factor, the truth is: Huntsman spiders are not dangerous to humans. They're skittish, not aggressive, and if they bite (which is rare), the sensation is usually milder than a bee sting.
They’re also nature’s pest control agents (famously efficient roach hunters) which means that while they might not pay rent, they do some dirty work around your house. You’ll typically find them in garages, sheds, or behind furniture, preferring tight, dark spaces where they can avoid contact.
And yes, they run like they’ve got somewhere to be. But that speed? It’s a defensive mechanism, not a sign of aggression. If anything, they’re more scared of you than you are of them.
Other Popular Brown Spiders Found in Florida
Florida is home to dozens of spider species, and several of them fall into the “big and brown” category. Here are a few others you might come across:
Wolf Spider
Photo Source -> UW - Milwaukee
These stocky ground-dwellers don’t spin webs to catch prey; instead, they hunt like wolves. You can spot them by their distinctive reflective eyes, which glow back when hit with a flashlight at night. They’re fast, solitary, and generally harmless to humans.
Cellar Spider (aka Daddy Longlegs)
Photo Source -> Utah State University Extension
These delicate spiders with spindly, stilt-like legs are frequently found in corners of ceilings and garages. Despite myths about their venom being deadly, they pose no threat to humans as their mouthparts can’t even pierce our skin.
Fishing Spider
Photo Source -> University of Maine Cooperative Extension
A real showstopper, fishing spiders are large, semi-aquatic spiders that can literally walk on water. You’ll usually see them near ponds, lakes, or even backyard pools. Like the wolf spider, they rely on speed and stealth to ambush prey. Their appearance can be intimidating, but their bites are not medically significant.
Brown Widow
Photo Source -> Center for Invasive Species Research
Often mistaken for their more infamous cousin, the black widow, brown widows are smaller, with a distinct orange hourglass on their abdomen. They prefer secluded spots like patio furniture, grills, and mailboxes. Their venom is neurotoxic, but weaker than that of the black widow and they’re not prone to biting unless seriously provoked.
Brown Recluse (Rare in Florida)
Photo Source -> University of Wisconsin
Here’s the spider that gets everyone nervous, and understandably so. The brown recluse has a reputation that precedes it, and while it can deliver a medically significant bite, it’s extremely rare in Florida. These spiders are small (under an inch), with a violin-shaped mark on their back and six eyes instead of eight. They tend to hide out in dark, undisturbed areas like closets or storage boxes. Still, most “brown recluse” sightings in Florida turn out to be false alarms, usually confused with other, harmless brown spiders.
How to Tell the Difference: Huntsman vs. Brown Recluse
When a big spider bolts across your wall at top speed, identifying it calmly isn’t exactly easy. But knowing a few key details can give you peace of mind and help you act appropriately (or not act at all).
Physical and Behavioral Comparison
Here’s a side-by-side breakdown of the two species most frequently confused in Florida homes:
Feature | Huntsman | Brown Recluse |
Size | Up to 12-inch leg span | Smaller than 1 inch body |
Eye Pattern | 8 eyes in 2 horizontal rows | 6 eyes in 3 pairs (rare configuration) |
Markings | No violin shape | Distinct violin-shaped marking on back |
Movement | Extremely fast, erratic | Slow, steady, and reclusive |
Behavior | Avoids humans, often visible | Hides in dark, undisturbed areas |
A few key things to focus on:
Size: Huntsman spiders are noticeably larger. If the spider looked “massive,” it’s unlikely to be a brown recluse.
Speed: Huntsmans move like they’ve had three shots of espresso. Brown recluses tend to freeze or scuttle slowly.
Eye count: Harder to see without a magnifying glass, but useful for professionals. Most spiders have 8 eyes; recluses have 6.
Markings: The brown recluse has a clear violin-shaped mark on its back. If you don’t see it, that’s a good sign but it’s not always visible on darker specimens.
Are They Helpful or Harmful?
When it comes to spiders, especially the big brown ones that show up unexpectedly in Florida homes, the first question on most people’s minds is simple:
“Should I be worried?”
Let’s cut through the fear and get to the facts.
Are These Spiders Dangerous?
Huntsman spiders might look scary because they’re big and fast, but they’re harmless to humans. They rarely bite, and if they do, it’s usually mild, less painful than a bee sting.
Brown recluse spiders can cause more serious bites, but they’re almost never found in Florida. Most “sightings” there are actually mistaken identity. In fact, most bites blamed on spiders in Florida aren’t from spiders at all, they’re usually insect bites or skin issues.
Unless you have unusual symptoms like fever or nausea, there's usually no need to worry. The fear of brown spiders in Florida is bigger than the actual danger.
What “Medically Significant” Really Means
This term comes up a lot in pest control and health conversations, and it tends to confuse people. When a spider is labeled “medically significant,” it doesn’t mean it's automatically dangerous or fatal, it means its venom has the potential to cause systemic effects in humans beyond just a red bump or itch.
So, what does that look like?
Localized reaction: Minor swelling, redness, or itchiness (like a mosquito or ant bite).
Medically significant reaction: System-wide effects like nausea, dizziness, fever, or necrotic skin lesions.
Only a handful of spiders in North America fall into that category: the brown recluse, black widow, and (to a much lesser extent) the brown widow.
Huntsman spiders? Not on the list.
When They Become a Problem
So you’ve spotted a big brown spider in the corner of your ceiling or worse, sprinting across the floor. You’ve identified it as a Huntsman (or at least ruled out anything venomous), and now you’re wondering, what’s next?
First: don’t panic. Second: you’ve got options; whether you want to keep them out for good or escort your unexpected guest back outside.
Safe DIY Tips to Keep Spiders Out
Most homeowners don’t want to hurt these spiders, they just want to stop seeing them inside. That’s where prevention really shines. Here are a few simple, effective actions you can take today:
Seal Up Entry Points: Use weatherproof caulk or foam to close gaps around doors, windows, vents, and baseboards. A spider only needs a space the width of a pencil to sneak in.
Store Firewood and Boxes Smartly: Keep firewood, cardboard boxes, and seasonal storage containers either outside or in sealed plastic bins. These make perfect hideouts for Huntsman spiders, especially in garages or sheds.
Swap Out White Bulbs for Yellow: Insects are attracted to bright white lights and spiders follow the food. Replace porch or garage lights with yellow “bug lights” to reduce the insect activity that draws spiders close to your home.
These small shifts make a big difference, especially in South Florida, where spiders don’t take a winter break.
How to Catch and Release a Huntsman Safely
If you’re someone who’d rather relocate than squish, we fully support humane removal when it’s safe to do so. Here’s how to do it right:
Use a Clear Container and a Sturdy Lid: Approach calmly with a glass or clear plastic container in one hand and a stiff piece of paper or cardboard in the other. Gently place the container over the spider, then slide the lid underneath.
Be Ready, They’re Quick!: Huntsman spiders are incredibly fast and can climb walls and ceilings with ease. Wear gloves for confidence, and try to trap the spider while it’s on a flat surface like a wall or floor.
Guide It Outside: Once you’ve got it contained, release it outside away from your home’s foundation, preferably near shrubs or trees. These spiders are beneficial in the garden and will continue helping with pest control outdoors.
And remember: there’s no shame in calling in a spider control company if the spider is too high up, too fast to catch, or you're just not comfortable.
Coexist or Control?
For the occasional spider sighting (especially if you can identify it as harmless) a DIY approach may be just fine. But when spiders start showing up repeatedly, or you’re unsure about what you’re dealing with, it’s time to bring in the pros.
Signs You Might Need Help
Here are a few indicators that your spider problem may need more attention:
You’re seeing spiders regularly inside: One sighting could be a fluke. But if it feels like they’re making themselves at home, you may have an indoor breeding source or accessible entry points that need sealing.
You’ve found egg sacs: Spiders lay eggs in soft, silken sacs, often tucked away in corners, under furniture, or behind boxes in storage areas. One sac can hatch dozens of baby spiders, so catching this early is key.
You can’t confidently identify the species: If you’re unsure whether you’re dealing with a harmless Huntsman or a potentially venomous spider, don’t guess. Misidentification is normal, and the safest course of action is to let a trained professional inspect and advise.
If you've made it this far, take a deep breath, you’re now far more equipped than most Floridians when it comes to identifying and knowing the infamous “big brown spider” in your home.
Here’s what I want you to remember:
In 90% of cases, that spider turning your living room into an obstacle course isn’t something to fear, it’s likely a harmless Huntsman, just doing its part in the local food chain. It's big, it's fast, and yes, it's startling but it's not a threat.
That said, we understand that fear doesn't always follow facts. Whether you're dealing with recurring sightings, mystery webs, or simply don’t want to take chances around your kids or pets, it’s okay to ask for help. That’s where we come in.
👉 Schedule your inspection with Hoffer Pest Solutions today.