Can Outdoor Spiders Live Indoors?

Originally posted on June 15, 2023 @ 12:02 am

Spiders often create webs, burrows, or nests in outdoor spaces such as gardens, woods, or fields. However, it is not uncommon for some spiders to find their way into our homes, particularly during the warm season. This can raise some questions, particularly for arachnophobes, about whether these outdoor spiders can live indoors. In this article, we will explore some of the key factors that determine whether outdoor spiders can thrive in indoor environments and what homeowners can do to prevent spider infestations.

The Science Behind Spiders

Spiders are fascinating creatures, with over 48,000 known species worldwide. These eight-legged arthropods belong to the class Arachnida and are known for their unique anatomy, ability to spin silk, and venomous bites. Spiders are critical to the ecosystem, as they are natural pest control agents, feeding on insects and other small creatures. However, spiders are also a common household pest, and many people fear them.

The Anatomy of Spiders

Spiders have two main body parts: the cephalothorax and the abdomen. The cephalothorax contains the eyes, mouthparts, and legs, while the abdomen houses the digestive, respiratory, and reproductive systems. Spiders have eight legs, and their legs are adapted for different functions such as walking, jumping, and capturing prey. The front two pairs of legs are usually the longest and are used for sensing and grasping.

The Silk of Spiders

Spiders are famous for their ability to spin silk, which they use for a variety of purposes such as building webs, wrapping prey, and creating egg sacs. Spider silk is incredibly strong, with some species producing silk that is stronger than steel. Spiders have specialized glands in their bodies that produce silk, and they can control the properties of the silk they produce depending on its intended use.

The Venom of Spiders

The venom of spiders is a complex mixture of chemicals that varies between species. Some spiders have venom that is harmless to humans, while others have venom that can be deadly. Spiders use their venom to immobilize their prey and defend themselves from predators. Despite their reputation, most spiders are not dangerous to humans, and bites are rare.

Spiders are a common sight in the outdoors, where they play a crucial role in maintaining the ecosystem. But what happens when spiders find their way indoors? Can outdoor spiders live indoors? The answer is yes, outdoor spiders can live indoors, and they often do.

One key takeaway from this text is that outdoor spiders can live indoors and it’s important to be able to identify the species of spider in your home to determine whether it is harmful or not. Additionally, there are various natural spider repellents, traps, and insecticides that can be used to get rid of indoor spiders if necessary, but preventing them from entering your home in the first place is the best strategy.

How Do Spiders Get Indoors?

Spiders can get indoors in several ways. They may enter through open windows and doors or hitch a ride on clothing or other objects that are brought inside. Spiders can also enter homes through cracks and gaps in the walls or foundation. Once inside, spiders may hide in dark, secluded areas such as closets, basements, and attics.

Are Indoor Spiders Dangerous?

Most indoor spiders are harmless and do not pose a threat to humans. However, some species of spiders have venom that can be dangerous, and their bites can cause a range of symptoms such as pain, swelling, and nausea. It’s essential to identify the species of spider in your home to determine whether it is harmful or not.

How to Prevent Spiders from Entering Your Home

Preventing spiders from entering your home is the best way to avoid having to deal with them indoors. Here are some tips to prevent spiders from entering your home:

  • Keep doors and windows closed or screened.
  • Seal cracks and gaps in the walls and foundation.
  • Remove clutter and debris from around the home and yard.
  • Keep outdoor lights off or switch to yellow bulbs.
  • Use natural spider repellents such as eucalyptus or peppermint oil.

How to Get Rid of Indoor Spiders

If you have spiders in your home, there are several ways to get rid of them. Here are some methods for getting rid of indoor spiders:

Natural Spider Repellents

Natural spider repellents can be an effective way to keep spiders out of your home. Some natural spider repellents include:

  • Peppermint oil
  • Eucalyptus oil
  • Citrus oil
  • Vinegar


Spider traps can be an effective way to catch and remove spiders from your home. There are several types of spider traps available, including glue traps and bait traps.


Insecticides can be effective in killing spiders, but they should be used with caution. Many insecticides are toxic to humans and pets, and they should be used according to the manufacturer’s instructions.

FAQs – Can Outdoor Spiders Live Indoors?

Can outdoor spiders survive indoors?

Yes, outdoor spiders can survive indoors. In fact, many spider species are known to live in both indoor and outdoor environments. If the conditions indoors are suitable for their survival, they can easily adapt to living indoors. Some spiders may even prefer indoor spaces with access to food and shelter.

Will outdoor spiders cause harm if they live inside?

Not all outdoor spiders are harmful to humans. Most spiders in North America are harmless and even beneficial as they help control the population of insects in and around homes. However, some outdoor spiders like brown recluse and black widow spiders have venomous bites that can cause severe health problems. Therefore, it is crucial to identify the spider species before attempting to remove them from indoor spaces.

How can I prevent outdoor spiders from entering my home?

To prevent outdoor spiders from entering your home, you need to seal all potential entry points such as cracks and crevices, gaps under doors, and windows. Keep your yard well-maintained, remove piles of debris and wood, and trim overhanging branches. Also, use yellow or sodium vapor lights instead of white lights that attract insects, which, in turn, attract more spiders.

How can I safely remove outdoor spiders from my home?

If you want to remove outdoor spiders safely from your home, you can use an insecticide spray, vacuum cleaner, or capture and release them. If you choose to use insecticides, read the label carefully and follow the instructions to avoid harming other creatures in your home. When using a vacuum cleaner, remember to dispose of the bag outside your home, so the spider doesn’t crawl out and re-enter your home.

Are outdoor spiders attracted to dirty homes?

No, outdoor spiders are not attracted to dirty homes. They come inside looking for shelter, food, and a mate. However, cluttered homes with piles of newspapers, boxes, or old clothes offer ample hiding places for spiders, making it easier for them to thrive. Therefore, it’s essential to keep your home clean, tidy, and clutter-free to reduce the likelihood of spider infestation indoors.