Are Daddy Long Legs Poisonous or Harmless Arachnids?

If you’ve ever spotted a spider-like creature with long, skinny legs creeping across your ceiling, you’re not alone. These odd-looking bugs are often called “daddy long legs,” and they’ve built quite the reputation over the years. But the big question remains: Are daddy long legs poisonous?

It’s one of the most common pest-related myths out there, and today, we’re setting the record straight.

Are Daddy Long Legs Poisonous?

Let’s clear this up right away: No, daddy long legs are not poisonous. In fact, most of them aren’t even true spiders, and none pose a danger to humans. Despite popular belief, they don’t have venom that can harm people, and they aren’t known to bite.

The confusion usually comes from how people define “poisonous.” Technically, poisonous means something is harmful when touched or eaten. Venomous, on the other hand, means the creature can inject venom through a bite or sting. Daddy long legs don’t fall into either category in a way that’s dangerous to humans.

The term “daddy long legs” actually refers to a few different creatures, which adds to the confusion. First, there are harvestmen, which are not spiders at all. They have one oval-shaped body part, no silk, and no venom glands. Then there are cellar spiders, which are true spiders with long, thin legs and messy webs found in basements and corners.

Some people even call craneflies (those big mosquito-looking insects) daddy long legs too.

Understanding the difference helps explain why so many people worry unnecessarily. Most sightings are completely harmless and don’t require pest control, unless you’re seeing a larger issue.

Why the Venom Myth Spread

One of the most popular myths says that daddy long legs have the most toxic venom of any spider, but their fangs are too small to pierce human skin. That story has been repeated on TV, online, and even in classrooms. But scientists have looked into it, and the truth is simple: there’s no evidence that their venom is dangerous to humans.

Harvestmen, which many people call daddy long legs, don’t even have venom at all. And while cellar spiders do have venom to help them hunt tiny bugs, it’s extremely weak and not harmful to people. Their fangs are also very small and not built for biting skin.

According to researchers at the University of California Riverside, this myth has no scientific basis. It’s just one of those stories that stuck and spread.

What They Actually Do in Your Home

Believe it or not, daddy long legs can be helpful to have around. They eat small insects like ants, flies, and even other spiders. They don’t build sticky webs all over your house, and they usually stay out of sight.

If you’re using eco-friendly pest control, these creatures can actually play a small role in keeping your home pest-free. Think of them as quiet helpers, working behind the scenes to keep more annoying bugs in check.

The Internet Made It Worse

Social media, video platforms, and TV shows have all played a part in spreading the myth. One TV program even claimed their venom could kill a human if only their fangs were longer. That idea may be dramatic, but it’s just not true.

The reality is that these creatures don’t pose any medical risk. They’ve just been misunderstood and mislabeled for decades. Unfortunately, those myths can stick and cause unnecessary fear.

How to Keep Daddy Long Legs Outside

Even though they’re harmless, not everyone wants daddy long legs hanging out in their house. Thankfully, you don’t need to spray chemicals everywhere to keep them away. A few simple steps can make a big difference.

Start by sealing up cracks and gaps around windows and doors. This blocks common entry points. Next, consider using yellow bug lights outside, which are less attractive to insects (and to the bugs that eat them). A dehumidifier in your basement or bathroom can help reduce moisture, another big draw for spiders and other pests.

Keeping storage areas organized also limits hiding spots. You can find most supplies for these steps at a local hardware store, usually between $5 and $25. It’s a budget-friendly way to stay in control.

How to Safely Remove From Indoors

If you do spot a daddy long legs indoors and want it gone, there’s a simple, safe method to use. Grab a clear cup or jar and gently place it over the bug. Then, slide a stiff piece of paper under the cup and carefully carry it outside. That’s it, no sprays, no mess.

Vacuuming can work too if you prefer not to get close, but use the gentlest setting to avoid harming the spider. There’s really no need for chemicals when these creatures pose no threat.

How to Prevent Indoors

Keeping your home spider-free starts with regular upkeep. Every season brings its own pest concerns, so it helps to stay ahead of them.

In spring, take time to sweep down old webs and dust corners. During summer, replace worn-out door sweeps. Fall is a good time to check window screens and seal any gaps. In winter, store firewood at least 20 feet away from the house to avoid bringing in bugs.

These small tasks add up, and many homeowners find that investing around $131 to $434 on weather stripping can make their homes more comfortable and pest-resistant year-round.

When to Call a Professional

Seeing a few daddy long legs here and there isn’t a cause for concern. But if you start noticing clusters of them, spider egg sacs, or signs of other pest activity, it might be time to get a professional opinion.

A pest control expert can tell if there’s something bigger going on, like a growing insect population that’s drawing spiders in. Bigfoot Pest offers affordable, no-pressure inspections to help homeowners figure out what’s happening and what steps to take next.

Final Thoughts

So, are daddy long legs poisonous? No. They’re completely harmless and, in many cases, helpful. Most of the worry comes from old myths and misunderstandings. Once you know the truth, there’s no need to panic.

Still, it’s okay if you’d rather not share your space with them. If you’re seeing too many or just want peace of mind, Bigfoot Pest is here to help. We believe in smart, safe pest control that fits your home and comfort level.

Need help identifying spiders or other pests in your home? Schedule a professional pest inspection with Bigfoot Pest today and let us help you feel confident in your space.