Spiders are one of the most common household pests and for good reason. They can be found in nearly any climate, and there are more than 45,000 species worldwide. These eight-legged arachnids are usually harmless to humans, but their presence can be alarming. This is especially true if you find you have many spiders in your home without explanation.
So, if you’re here asking why are there so many spiders in my house, we’re here to help. Today, we are talking about what to do if you have discovered an unnerving infestation of arachnids.
But before we begin, let’s take a moment to talk about spiders and why they really aren’t all that bad. (We swear!)
Spiders – The Eight-Legged Truth
Spiders are some of the most common pests to enter homes.
Like other arthropods, spiders have an exoskeleton (external skeleton). The exoskeleton is made of a hard material called chitin. Spiders also have two body parts: the abdomen and cephalothorax (head-thorax). Spiders’ bodies are divided into two main parts, or tagmata: the prosoma (cephalothorax) and opisthosoma (abdomen).
While many people fear spiders, the truth is that spiders are actually incredibly beneficial. In fact, spiders help to control pest populations by feeding on insects that damage crops and spread disease. One study even suggests that spiders can eat more than half their own weight each day in prey! Spiders also help control pest populations by eating flies and mosquitoes, which can carry diseases like malaria and the West Nile virus.
All spiders are predators that hunt their prey using a variety of methods. Some, such as tarantulas, have large fangs and venom glands and use brute force to subdue their prey. Others, like the orb-weaving spiders, use silk to snare insects.
Webs are often some of the first signs of spiders, and you may have noticed webs if you’re wondering “why are there so many spiders in my house?”.
But why do spiders spin webs? Most spiders spin webs to catch their prey, and their prey isn’t always just insects. Along with insects, spiders consume small reptiles, rodents, and even amphibians!
Most web-spinning spiders produce silk from special glands in their legs called spinnerets. The silk is released through small holes in the underside of their abdomen called spigots. All webs you see are produced by spiders – even old and dusty cobwebs in the corner of your closet!
If you are worrying about why are there so many spiders in your home, you could have a good reason, as some spiders are dangerous to people and pets. However, most spiders that enter your home are harmless and may even be helpful to protect your home from other pests that could be dirty or spread diseases, like mosquitoes or roaches.
In fact, the most common types of house spiders you will encounter when looking into why are there so many spiders in my house include:
The Daddy Long Leg Spider
The daddy long legs spider is one of the most common spiders found in American homes. This spider is also known as the harvestman, and they are found throughout North America and Europe but is not considered dangerous or harmful to humans or pets. Daddy long-leg spiders can be identified by their extremely long legs and very small body.
These spiders have eight eyes on each side of their body which helps them see prey from far away so they can ambush it quickly with their fast reflexes. Their bodies are brownish-gray or black with white markings on their backside. They can vary in size depending on how old they are, but usually grow anywhere between 1/2 inch – 1 1/2 inches in length with their leg span being anywhere from 1 1/2 – 4 inches wide!
The Wolf Spider
Wolf spiders are agile hunters and can run up to two feet per second. They are also known for their large, hairy legs and for their ability to camouflage incredibly well in different environments. The spider’s color can range from yellow to brown or black, depending on the species. These spiders use their long legs to hunt down their prey, which includes insects, centipedes, small rodents, lizards, and even other spiders.
The Cellar Spider
Cellar Spiders are common house spiders that live not only in homes but also under rocks or wood piles in yards and gardens. They have eight eyes arranged in two rows of four on each side of their head. These spiders are typically gray or black in color with lighter stripes running across their bodies. Their webs are usually found behind objects like doors and window sills or in corners of rooms where they can catch prey without being seen by humans.
And the American House Spider
American House Spiders are brown in color with dark brown spots along the sides of their bodies, making them resemble small tarantulas at first glance. These spiders have eight eyes arranged in two rows of four on each side of their head and two additional eyespots located near the mouthparts that help them detect movement around them.
Like the other spiders above, the American House Spider is harmless to people and pets, but it can be deadly to its prey, which include pests like flies, mosquitoes, ants, and more.
Of course, knowing that most spiders that enter your home are harmless may not alleviate your anxiety about these eight-legged arachnids. So, why are there so many spiders in my house?
Let’s find out!
Why Are There So Many Spiders In My House?
Spiderwebs are some of the first indicators of spiders in your home.
There are more than 40,000 species of spiders in the world, and they can be found everywhere except Antarctica. Spiders are beneficial because they eat insects and other pests that can damage your home and garden. However, a spider infestation can be annoying and may even be dangerous if you have an infestation of venomous spiders.
So, why are there so many spiders in my house, you ask? There are several reasons why there could be so many spiders in your home, including:
Your Home Makes An Ideal Living Environment For Spiders
Spiders like warm temperatures and humid conditions, which means they’re likely to hang out near sources of heat or moisture. That includes bathrooms and kitchens where there are sinks and showers as well as basements where there is a furnace or water heater.
Spiders also tend to congregate in dark corners where they can hide from predators and prey alike. If you have dark corners that aren’t being used for storage or other purposes, then the chances of having an infestation increase significantly.
You May Have An Abundance Of Other Pests In Your Home Spiders Prey On
You may have an abundance of other pests in your home, such as roaches or rodents, which provide a food source for the spiders. Spiders prey on these pests and will move into your home to get them.
Spiders Have Bred Somewhere Inside Your Home And Their Eggs Have Hatched
The most common explanation for finding large numbers of spiders in your house is that they have bred somewhere inside the house and their eggs have hatched. This is a regular occurrence during the summer months when temperatures rise. This is often due to the fact that the population of insects and other prey increases, which means that there are more spiders that will come around to feed on them.
You’ve Moved Into A Newly Built House Or Apartment That Has Spiders In It Already
Another possible reason for needing to find out why are there so many spiders in my house could be that you’ve moved into a new home or apartment that has already been infested with spiders. This is especially common if you’re living in an older building, or if you’ve moved into a home that has been empty for a while during autumn months when colder weather is more likely to drive spiders indoors to find shelter from freezing temperatures.
When Is A Spider Infestation Dangerous?
Black widow spiders are common venomous spiders to invade homes.
Spiders are often misunderstood and feared. This is because, while they are generally not aggressive, they can look pretty scary when they’re crawling around on your floor or in your home.
While a spider infestation can be annoying, it’s not always dangerous. Spiders are extremely common in the United States and around the world, as we’ve discussed, so looking into why are there so many spiders in my house is not unusual.
It’s important to remember that many species of spiders are beneficial to humans because they eat pests like flies and other insects that can damage crops or spread disease, as we discussed above. However, there are some types of spiders that do contain venom that they generally use to paralyze their prey before they feed on them.
If you live in a region where there are lots of spiders, then chances are that you’ve had at least one kind of spider infestation in your home at some point. The good news is that most spiders aren’t dangerous to humans and can be removed or handled with ease. Still, there are times when a spider infestation can become dangerous.
The most dangerous spiders in the United States include:
The Black Widow Spider (Latrodectus mactans)
The black widow spider is one of the most common types of spiders found in homes across North America. They are easily identified by their black markings on their backs and their red hourglass shape on the underside of their abdomen. Black widows have an interesting mating ritual that involves eating the male after mating with him!
This species typically lives indoors but will sometimes move outdoors into grassy areas or wood piles during warmer months when food sources become more plentiful outside. If you believe that there might be black widows present in your home, it’s important to take action quickly. Black widow bites can be dangerous, especially to small children or small pets.
The Brown Recluse Spider (Loxosceles reclusa)
Brown recluse spiders are commonly found throughout the southern United States as well as parts of Canada and Mexico. These spiders are not aggressive and will only bite if threatened or accidentally touched by humans. The brown recluse’s venom can cause severe skin infections if left untreated, so it’s important to consult with a doctor if you think you may have been bitten by one of these creatures.
If you think that the brown recluse spider is the reason you are asking why are there so many spiders in my house, then it’s important to contact a professional pest control agency.
Though they are small, brown recluse spiders can be easily identified by the clear violin shape on their back.
The Hobo Spider (Tegenaria agrestis)
The Hobo Spider is native to Europe and was introduced to North America in the early 20th century. It’s found across the United States, mostly in warmer climates like California, Nevada, and Texas. These spiders are known to feed primarily on insects but will also attack small vertebrates like lizards, snakes, and frogs. Although they have been reported to bite humans, the bites are rarely serious and typically cause pain, itchiness, and swelling at the site of the bite. If you do think a hobo spider infestation is causing you to look into why are there so many spiders in my house, you’re in luck.
These spiders are typically easy to get rid of using common methods, products, and regimens like those listed below.
Best Products For Getting Rid Of Spiders In The House
Although spiders are beneficial, most people don’t want them in their homes.
There are various ways to get rid of spiders in your home but it is important that you choose the right method for your needs. Some methods may take longer than others or could cause more harm than good.
When it comes to wondering why are there so many spiders in my house and then putting together a strategy to get rid of them, research is going to be key.
Remember to choose products that are going to be best for your situation, your family, and your lifestyle. Luckily, you do have plenty of methods for getting rid of the pests causing you to question “why are there so many spiders in my house.”
Some of the most common and popular methods include:
One way to keep spiders out of your home is by using natural repellents. These products contain chemicals that will repel spiders from entering your home and they are usually effective when used with other methods like insecticides and professional pest control services. There are many different types of natural repellents available on the market that can help prevent a spider infestation in your home or business premises.
Insecticides are another popular way to get rid of spiders in a hurry but they can be dangerous when used incorrectly so it’s important that you read all instructions carefully before applying any insecticide product around your home. This is especially true if you have children or pets in the home.
One of the least costly methods for getting rid of spiders after wondering why are there so many spiders in my house is to use home remedies. Some good ingredients that deter spiders include baking soda, lemon juice, peppermint oil and essential oils, bleach, and alcohol. Mixing these ingredients together will help kill the spiders and their eggs. We will give you more home remedies further down.
Professional Pest Control Experts
Professional pest control experts can help eliminate any existing infestation as well as prevent future problems from occurring. If you’re wondering why are there so many spiders in my house and you can’t seem to get rid of them, a professional pest control expert may be your best bet.
Of course, before you opt to use a professional pest control expert or home remedies for why are there so many spiders in my house, we suggest trying some of the products below.
Mighty Mint Spider Repellent Peppermint Oil Spray
Mighty Mint Spider Repellent Peppermint Oil Spray is a safe, natural and effective way to get rid of spiders in your home, especially if you are wondering why are so many spiders in my house.
This spray is a non-toxic product that uses mint oil to repel spiders. The peppermint oil has been shown to have an effect on many insects, including spiders. Mighty Mint Spider Repellent Peppermint Oil Spray is effective against all types of spiders including black widows, brown recluses and hobo spiders.
The spray bottle makes it easy to apply Mighty Mint Spider Repellent Peppermint Oil Spray around your home or property quickly and easily.
The spray is designed not only to kill spider eggs but also adult spiders. It’s important to kill all stages of the spider life cycle in order to prevent future infestations from occurring.
Okutani Ultrasonic Pest Repeller
The Okutani Ultrasonic Pest Repeller emits a high-frequency sound that is too high for humans to hear but is highly irritating for most pests (including spiders). You can also use this device to get rid of cockroaches, mosquitoes, and other unwanted insects.
The product can be used both indoors and outdoors. However, if you want to use it outdoors make sure that the area around your home is sealed properly so that the pests don’t find their way inside again through holes or cracks in your walls or floors.
Harris Spider Repellent Spray
Harris Spider Repellent is a natural spray that repels spiders and insects from your home. The spray can be used inside and outside to keep spiders, moths, ants, flies, and other pests away from your home.
The spray is made with essential oils that are 100% natural, non-toxic and safe for people and pets. It’s also suitable for use around kitchens, so you don’t have to worry about contaminating your kitchen when you spray it on the countertops or floorboards.
To use this spray, spray it around all the entry points into your house (doors and windows) as well as inside cupboards where they like to hide out during the daytime. You may need to repeat this step once or twice a month until eventually the spiders move on elsewhere or die off naturally.
Wet & Forget Miss Muffet’s Revenge
Wet & Forget Miss Muffet’s Revenge is made with the same active ingredient as other Wet & Forget products — potassium bicarbonate — but it also contains pyrethrins, which are derived from chrysanthemum flowers and have been used for years as an insecticide.
The product comes in a spray bottle that makes it easy to apply, whether you want to spray down your entire house or just a small area where there are spiders hiding out.
Simply spray the affected areas with it and let sit for 10 minutes before wiping clean with a paper towel or cloth. You can also use it on hard surfaces such as your driveway or patio if you notice any spider webs or nests there. The wet formula works by penetrating deep into the pores of the material where it attacks insects’ exoskeletons, causing them to dehydrate and die within 24 hours.
Ortho Home Defense Max Indoor Insect Barrier
Ortho Home Defense Max Indoor Insect Barrier is a product that helps prevent spiders from coming into your home by keeping them out of cracks and crevices around windows, doors, siding, porches and other entry points. This product also helps keep spiders from getting inside your house through the walls by blocking their access to those areas as well. It does this by creating a barrier that prevents insects from entering these areas so they cannot live in them or breed there.
To use Ortho Home Defense Max Indoor Insect Barrier, you simply apply it around cracks, crevices and openings where insects might enter through the outside walls of your home or get inside through window frames or doorways. You can apply this insecticide directly to these surfaces or mix it with water before spraying it onto these areas where insects are likely to be.
Home Remedies For Getting Rid Of Spiders In The House
Vinegar can make a great repellent for spiders and other pests.
You may have a fear of spiders or just find them so annoying that you want to get rid of them. Either way, there are plenty of ways you can do it without spending money on products or hiring an exterminator.
Here are some home remedies for getting rid of spiders if you are wondering why are there so many spiders are in my house:
Vinegar is an effective way to kill and repel spiders. You can make your own spider spray by mixing one part vinegar with three parts water and spraying it around your house wherever you see signs of spider activity. If you don’t want to make your own spray, you can also buy a commercial spray made from vinegar that will kill and repel spiders effectively.
Essential oils such as peppermint oil and lemon oil have been found to be effective against both mosquitoes and spiders. They work by creating an unpleasant smell that keeps pests away from your home or property. To make your own essential oil spray to repel spiders when wondering why are there so many spiders in my house, follow the below instructions:
Mix one part water with ten parts water and add 10 drops of peppermint or eucalyptus essential oil (or another essential oil that you prefer).
Add this mixture to a spray bottle and shake well. You can use this spray to spray on your carpet, furniture, and other surfaces around your home.
How to use companion planting in your garden to keep spiders out of your yard
Use companion planting in your garden to keep spiders out of your yard. Companion planting is a practice where you grow certain plants next to each other that repel insects and pests. For example, marigolds or nasturtiums can be planted near tomatoes because they repel pests like aphids and hornworms.
You can also plant basil or chives near tomato plants since these herbs repel whiteflies and other pests. The best way to use companion planting is by planting herbs or flowers around the perimeter of your yard as well as inside your garden beds. This will help keep unwanted insects away from your garden so they don’t come into contact with your fruits and vegetables!
When it comes to why are there so many spiders in my house and using companion planting to repel them, the best plants include lavender, peppermint, citronella grass, chives, garlic, and onions.
Preventing Spiders From Getting Back In Your Home – Tips And Tricks
Preventing spiders is often easier than getting rid of them once they have infested your home.
You’ve managed to get rid of all the spiders in your home, but now you’re wondering how to prevent them from getting back in. Spiders are beneficial insects that can help control other insect pests, but they don’t belong in your home and can be difficult to get rid of. For this reason, once you’ve gotten rid of them you won’t want to have them back.
Below are expert tips for how to keep spiders out of your home once you have managed to get rid of them:
- Reduce Clutter
- Vacuum, dust, and sweep often
- Keep doors and windows closed
- Keep up with routine home maintenance
- Keep your yard well maintained
- Use a form of pest control year-round
So are you wondering why are there so many spiders in my house? Which methods have you found work to get rid of them? Tell us in the comments below.
Jack founded our blog after two decades of working in the pest control industry. His vast experience dealing with a wide array of pests allows him to diagnose issues quickly and get to the heart of pest problems quickly and effectively. He has serviced more than 2,000 homes over his career and there is hardly any pest situation that he has not seen before.