How to Kill Spiders

Despite their spooky appearance, most spiders are harmless and are very helpful guests. Spiders help keep your home free of annoying insects, and they often live quietly and reclusively. However, among the thousands of species that belong to the class of arachnids, there are some that are quite dangerous and should be excluded from our habitat. Read on to learn how to spot dangerous spiders, get rid of them safely, and keep your home spider-free.

Table of Contents

Identify dangerous spiders

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Learn some common dangerous spiders. In North America, the most common dangerous house spiders are the black widow and brown recluse. However, find out what venomous spiders are in your area and learn how to distinguish them from harmless house spiders. ^{[1] X Research Source}

Female black widow spiders are glossy black with a prominent red hourglass shape under the abdomen. Male spiders have ivory-white spots on their upper abdomen, usually about half the size of female spiders and are not as dangerous as female spiders.
Brown recluse spiders are small, light brown, with a vipin on their bodies, living mainly in the Midwest and southern United States. They like to dwell in nooks and crannies in secluded places. ^{[2] X Research Source}
In Australia, the redback spider is a common and dangerous species that often invades homes. Other spiders to watch out for include hobo spiders and wolf spiders.

Consider spider webs. In contrast to the dusty old webs, the presence of the new webs is a sign that the spiders are active. By doing a little research on the web patterns of the specific spiders you are looking for (or not finding), you can prepare a plan to attack unwanted spiders.

The web of the black widow spider is irregular and thicker than that of other spiders, usually within 30 cm of the ground. This spider usually webs in dry corners and other safe places, not in open and easy to find places. Black widow spider webs look quite arbitrary with the characteristic of being funnel-shaped, where spiders hide during the day.
The web of the brown recluse spider is loose and sticky, ivory white. You won’t find them in the middle of trees, but in “hidden” places like under boxes, in piles of firewood or in secluded areas.
The large and intricate webs are characteristic of the orb-weaver spider, a useful species of spider that hunts insects. You just leave them there, or gently move them elsewhere.

Learn about spider behavior. Black widow spiders are nocturnal, and brown recluse spiders rarely come out of hiding. If you have a large, brown, hairy spider in your home that is weaving its web in the middle of the day, it’s probably nothing to worry about.

If you’re concerned about poisonous spiders in your home, check for spider webs during the day, when the spiders are inactive. You can spray or sprinkle the insecticide right away, or wait until the night to come back to kill the spiders if you want to be sure.

Get rid of spiders

Remove harmless spiders and kill dangerous spiders. Most of the spiders you come across on a daily basis are harmless. Take the spiders out so they can catch more insects by putting them in a jar or brushing them on a piece of paper and throwing them out.

Use a broom to sweep spiders into a bowl or saucepan. Cover a newspaper or magazine over the bowl to prevent the spider from escaping, then release it, as far away from home as you like.
If you want to kill spiders without having to crush them, you can put insecticide in a bowl or saucepan to kill spiders as soon as you catch them. You can also spray insecticide or hairspray on the spider. Only do this if it is a harmful spider.

Spray or sprinkle with insecticide. Liquid and powdered insecticides are available, and you can use them when you find spider webs during the day. This is an effective method so you don’t have to run after the spiders with a flashlight and crush them.

Powdered drugs such as Drione Dust and Delta Dust are suitable for use in places only spiders frequent, such as under stairs or attics. Use a powder sprayer to spray the holes in the wall near the spider webs to create an unfavorable environment for spiders.
Liquid drugs such as Demon WP and Cynoff EC can be used under beds and dark corners. These products are usually sold in powder form and have instructions for mixing the powder with water to make a spray.
If you want a natural product, try using diatomaceous earth, which contains fossilized diatomaceous earth. This powder is harmless to humans and pets and is even used in cat food and litter, but can dehydrate the exoskeleton of insects and spiders. ^{[3] X Research Sources}
After getting rid of spiders, you should also treat the area with an insecticide as a precaution. Spiders have a habit of choosing the same place to live, so you need to prevent it by spraying or spraying with insecticide.

Suction spiders with a vacuum cleaner. A good vacuum with a suction nozzle attached to the machine will help you get rid of spiders without having to get close to them. Even if the spider is hiding in its funnel, you can still use a vacuum cleaner to suck up both the cobwebs and the spiders inside.

This is also an effective method to attract swarms of baby spiders in the house, which are difficult to kill or relocate.
Once you’ve sucked up all the spiders, you need to remove the trash bag from the vacuum cleaner, put it in a tightly tied garbage bag, and throw it in the trash.

Crush the spider. Sometimes you just have to use the old method and the shoe. If the spider is in the web, sweep it out with a broom and use a shoe, rolled up newspaper or book to crush the spider. This is not very polite, but at least you know for sure that you have handled the spider.

Black widow spiders tend to run towards you if caught, so be quick and keep your distance from dangerous spiders.
Watch the spiders carefully before crushing them, as a pregnant mother spider can release her baby spiders when it is crushed.

Prevent spiders from entering the house

Clean up often. Spiders like dark and quiet areas to lay their webs, so cleaning the house is the best way to prevent spider infestation. You need to sweep and mop the house regularly, and vacuum crevices and gaps in the walls. Outside of the house, use a faucet to wash the windows to prevent these creatures from congregating.

In places like attics, basements, or anywhere with lots of boxes or furniture, you need to move things around and vacuum from time to time to avoid creating a favorable environment for spiders to live. Clean up clutter and organize them in order to get rid of spiders’ favorite hiding places. Consider using insecticides in areas where you are concerned about spiders.
Outside of your home, prune bushes and trees around the house, especially at the nearest entrances. If there is a pile of firewood next to the house, you should think about moving to another place. There are areas where spiders often congregate, and if there is easy access to the house, they can get in very quickly.

Check doors and windows for gaps. Seal all openings with protective strips to ensure safety and prevent pests from entering the home.

Consider spraying or sprinkling insecticide into every opening before sealing. Use glue or protective strips to seal.

Use natural spider repellents indoors and out. Natural spider repellents are easy to prepare, easy to use and will ensure your home is free of spiders; so you don’t have to worry about destroying or moving them elsewhere. ^{[4] X Research Sources}

Add 3-5 drops of tea tree, peppermint or lemon essential oil to a liter of water to clean the house. These substances are not harmful to humans or pets, but produce unpleasant odors to insects and spiders.
Plant eucalyptus and spread horse chestnuts. Many people believe that eucalyptus is a natural spider repellent, and some studies have shown saponins—a natural chemical in horse chestnuts—to repel spiders.

Prepare a spray to repel spiders. You can make sprays to use outside windows and doors, along fences and mailboxes. Mix and pour the following ingredients into a spray bottle:

1 cup vinegar
1 cup pepper
1 teaspoon oil
1 teaspoon liquid soap.

Advice

If your home is constantly infested by harmful spiders, contact a pest control service to have them deal with it for you.
Don’t kill spiders unless absolutely necessary. You can easily move the spiders; Moreover, they are also beneficial for your home (they eat most of the insects that can enter the house).

Warning

If you are bitten by a venomous spider, call 911 for prompt treatment.

Steps

Identify dangerous spiders

Get rid of spiders

Prevent spiders from entering the house

Advice

Warning

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