What Can You Spray On Spiders To Kill Them?

Effective Tips for Control of House Spiders

Know Which Ones Are Your Friends And Which Ones Are Your Foes

Spiders are one of the most-feared of all pests in the home that people want to exterminate. There are more phobias about spiders than any other pest, and understandably so. If you get bitten by the wrong spider — a black widow or a brown recluse — and you have a bad reaction to the venom, you can end up in the hospital. And yes, there have even been some deaths associated with spiders (though fewer than you may think — only six per decade in the U.S.).

How to Use Vinegar to Get Rid of Spiders

Spiders are outdoor creatures, but they frequently find their way indoors in search of shelter or food. Although they are helpful inside in getting rid of unwanted insects like ants and flies, many people still dislike finding these eight-legged creatures in their home. It’s also frustrating to deal with the webs they create in corners and various nooks and crannies. And even though most spiders do not cause substantial bites and only bite as a defense mechanism, no one wants to find one sharing their bed or sofa.

There are many ways to avoid giving these common pests a home. Spiders love clutter, so keeping your house clean and clutter-free is a good start. Don’t leave food out and be careful not to leave crumbs around—crumbs tend to attract other pests, like ants, which in turn attract the spiders that feed on them.

If you have spiders in your home, there are many ways to go about getting rid of them. But if you are looking to avoid harmful chemicals, there’s a natural, popular household item you can turn to for help—vinegar. There are so many uses for vinegar, and fortunately, one of them is as a remedy for unwanted spiders. White vinegar contains acetic acid that harms spiders, so by using a diluted vinegar solution you can safely and successfully repel these unwelcome guests.

What you need:

  • Water
  • White vinegar
  • Spray bottle and/or small dishes

What to do:

  • Mix together equal parts of water and white vinegar in a spray bottle.
  • Spray directly on spiders, webs, or in places where you find them like corners, cabinets, or closets. Be sure to spray cracks or crevices in the walls and floors as well.
  • Repeat regularly.
  • Since the odor alone may be enough to repel them, you can place small dishes of diluted white vinegar in corners, underneath furniture, or other dark areas where they might be tempted to set up shop.

For further assistance in protecting yourself from pests, call Green Pest Solutions at 877-636-9469 . Not just a pest control company, we act as a support system, there to help make sure you’re able to spend more time free of infestations. Call us today for more tips and tricks on pests at bay—the safe way.


A. Sanitation-Reduce Favorable Spider Conditions

Remove some infestation sources such as clutter in the yard and crawl spaces and any ground covers against the foundational walls. Any sanitation step to remove favorable conditions is the first step in spider control. Getting rid of other insects with a routine insecticide treatment should be considered, since other insects are their food sources.

  • Jt Eaton Webster Cobweb Duster Head is very handy to clean cobwebs and used as an applicator tool for insecticide dust. This head can be placed on any standard threaded pole found at your local home improvement store.
  • Web Out is a natural product that not only removes the spider webs, but repels the spiders as well. It will last 5-6 months inside and 2-3 months outside.

B. Kill Spiders and Insects- Insecticides

Insecticide Concentrates & Aerosols

  • Perimeter Spray Treatment— If spiders are coming indoors, hunting for their prey, spray a residual insecticide treatment such as Onslaught Fastcap Spider and Scorpion Insecticide around all entry points and the perimeter of your house. Spray anywhere they are webbing, on decks, under eaves, on porches and other areas on the exterior of buildings.
  • Indoor Spray Treatment — Spray along baseboards, in corners and under furniture. Use an insecticide aerosol like PT221L Aerosol with a crack and crevice tip to spray along baseboards, window and door frames, corners, pipes and other areas where spiders may crawl. These aerosols are convenient to spray in areas where a water based product can not reach.
  • We have a kit with Onslaught Fastcap Spider and Scorpion Insecticide and PT 221L Aerosol in one kit called the Residential Spider Kit. Use the Onslaught Fastcap outside (it may be sprayed inside as well) and the PT221L Aerosol with its crack and crevice tip is used to spray into hiding places where the liquid can not reach.
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Suggested Insecticide Concentrates

  • Onslaught FastCap — Microencapsultated; fast acting; may be used inside or outside
  • LambdaStar Ultracap 9.7 — Micro-encapsulated; spray inside and outside. It adheres well to surface areas and is ideal for perimeter treatments around structures.
  • Cyzmic CS- A suspended, encapsulated insecticide concentrate with a long residual and controlled release; spray inside or outside. It adheres well to surfaces.
  • Cyper WSP — Wettable powder; may be used inside or outside.

Suggested Aerosols

  • PT211L Aerosol — The PT 221L has a long residual and excellent knockdown; it is a good all-purpose spray with a low odor.
  • D-Force HPX Aerosol- With crack & crevice tip- Last 4-8 weeks.
  • Stryker 54 Contact Spray — This pyrethrin aerosol spray is used for killing spiders on contact and flushing them out of hiding places.

C. Insecticide Dusts— Additional Treatment

For a large spider problem, use an insecticide dust like D-Fense Dust in the attic areas in particular. Other areas that can be dusted include wall voids and under baseboards with hand dusters. We also carry a Cobweb Duster Head to be placed on a standard pole. The brush head will hold the dust in place; brush it in places where the spiders make their webs.Place an insecticide dust on the head and reach to the corners in the basement, garage, and porch areas.

For large areas, use Dustin Mizer Duster. Dustin Mizer cranks out a lot of dust for great coverage in attics.

D. Monitoring with Spider Traps

Trapper LTD Insect Glue Boards will catch spiders and monitor the population. The Biocare Spider Trap will catch spiders and silverfish and serve as a monitoring tool.

General Spider Characteristics

Many species of spiders are common household pests in the United States. Spiders are considered a beneficial pest because of their prey to other insects and many people do not consider spider control measures for most spiders. Because spiders have eight legs, they are easy to separate from insects, which have only six legs. Another distinction between spiders and other pests is that spiders do not have wings or antennae. Spiders are arachnids.

Location of Spiders

Some Spiders populations are found in humid and moist locations like basements and crawl spaces. Other Spiders prefer dry and warm places. They can be found in upper corners of rooms and attics as well as sub floor air-vents. Spiders prefer to hide in dark areas and in cracks as a retreat in order to construct material for their webs.

Spider Webs (Cobwebs)

Some species web over lamps, in corners, attics and basements. Every «cobweb» was made by a spider.

Spider Bites and Venom

In order to kill their prey, all spiders use venom. Not all spiders however are dangerous to humans.

If Black Widow Spiders and Brown Recluse Spiders, Hobo Spiders and European House Spiders are found, pest control treatment should be considered. These spiders do not create spider webs indoors.

Although there is generally little danger resulting from spider bites from most spiders, it is advisable to consult a physician from spider bites.


The female has a shiny black, globular abdomen with two yellow or red markings in a triangle shape. It looks like an hourglass. Males are smaller, lighter in color, with light streaks on the abdomen. The web is irregular, many times found along exterior foundations on slabs, under stones and rocks, behind shrubs .They usually don’t enter structures .They will bite if provoked. The bite feels like a sharp pain ,like a needle puncture. After 15 minutes to an hour there will be muscular cramps. Bites are rarely fatal, but you should seek medical attention.


The body is yellow to dark brown, with the body size of 1/3-1/2 inch long. Combined with the legs it could be about 1 inch or longer in diameter .The dorsal has a dark brown violin shaped marking, very distinctive. Their web is off white to Gray .They can be found outside, under rocks, debris, wood piles, etc.,but many times they are found inside.

Brown Recluse spiders can be found in storage areas like closets, basements, bathrooms, bedrooms, attics, garages and cellars. Sometimes they can be around above the ceiling duct work or register. When inspecting for Brown Recluse spiders, use gloves and a flashlight. The Brown Recluse likes to stay hidden. There webs are off white to gray colors and they are not extensive.

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Many times people get bit by putting their hands or feet in something that has been in storage. You should always wear gloves when handling debris outside the home The initial bite is not intense, but poisonous. After 8-12 hours, the pain is more intense, and over the next few days large sores form leaving a disfiguring scar. You should seek immediate medical treatment after the bite.



To some people, the title of this article may seem uncalled for, gruesome even. For all the good things that spiders can do for the ecology, why would anyone want to kill these friendly neighborhood spiders? Aside from that, they are pretty harmless.

Yes, it is true that most spiders are harmless, and in fact even helpful to the environment. Spiders are known predators of such pests like mosquitoes, ants, cockroaches, and even mice. They just keep to themselves and never disturb anyone. In fact, it has been said that whenever we are at home, we are always just within three feet from a spider. There just seem to exist this peaceful harmony between us homeowners and the spiders, as long as they do not bug us, we do not bother them and allow them to live with us.

However, there are some instances wherein spiders are not and should not be welcomed in our homes. We are talking here about venomous spiders.

Are there venomous spiders in the United States?

The answer to this question is a big YES. There are venomous spiders in the United States, and they sometimes find their way to thousands of American homes. They do not make themselves conspicuous to humans. They just simply hide in the dark areas of the house where they would be undisturbed.

There are two species of venomous spiders here in America: The black widow spider and the brown recluse spider.

The black widow spiders

The black widow spider is the more common type of venomous spider in the United States, and definitely, the most venomous spider not only here in America, but all throughout North America. It is reported that the black widow venom is 15 times more powerful than that of a rattlesnake’s, and only the females bite, and when they bite, it causes extreme pain due to its power, A black widow spider’s bite, though as painful as it is, is not fatal to adult humans. For children and the elderly, however, it can be fatal.

A female black widow has a shiny black body with a red hourglass marking in their abdomen. They are about 1.5 inches long. The red hourglass markings serve as a warning to other predators that they are toxic, which effectively shoos them away. The male black widow, on the other hand, is about half the size of the females lighter in color. They have pink or red spots on their backs. The female black widow has this nasty habit of killing and eating their male counterparts after mating, hence the name black widow. It is said that the males make this ultimate sacrifice so that their offsprings will have enough source of food eventually.

For their lifespan, the female black widows can live up to three years. The males can live up to a year.

Black widows use their webs to capture their prey. Their diet includes arachnids and other insects. They feed on mosquitoes, flies, ants, termites, and roaches. Black widow spiders only eat liquefied prey. How do they do this? Well, once these insects are captured in the web, the black widow would then approach the poor guy to covers it with silk. It then bites into it to release an enzyme that would liquefy their prey.

Black widow spiders are generally peaceful too and just keep to themselves. However, if they feel threatened, or surprised, they will bite. That makes them really dangerous to be around our homes. If you accidentally run into a black widow spider, and it bites you, wash the bite area with soap and water, then apply a cold compress. After that, go to your doctor at once. If possible, catch the same spider that bit you, whether dead or alive. Show it to your healthcare provider so that proper treatment will be administered.

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Brown recluse spiders

The brown recluse spider is the only other venomous spider in North America and the most common of the brown spiders. It has a violin-shaped marking on their bodies. What sets them apart from all the other spiders is their 6 eyes, instead of the usual 8. These eyes are arranged in three pairs.

The brown recluse spider, like the black widow spiders, is generally peaceful and also keep to themselves. The brown recluse spiders are shy and avoid any confrontation, hence its name. And like the black widow spiders, they hide in dark places. They are creatures of the night; they forage for food only at night and rest during the day. The brown recluse spiders also need to mate only once in a year to be able to produce 150 eggs in a year.

A brown recluse spider bites only when they feel threatened or surprised. If a brown recluse bites you, seek immediate medical care. This would also be extremely painful, but the brown recluse bites are not fatal. Some people though, develop severe symptoms. People who are bitten by the brown recluse often have small red marks on the skin, but heals immediately.

Symptoms of a brown recluse bite include fever, chills, nausea, vomiting, and sweating. When bitten, see your doctor immediately. Wash the bite area with soap and water and then put a cold compress on the bitten area before going to the hospital as a first aid treatment. Let it stay there for about ten minutes. If you still can, bring the spider that bit you along with you to the hospital. This way the doctor would know that you were bitten by a brown recluse spider, and would know the type of treatment to give you,

What are some DIY solutions to get rid of these poisonous spiders?

If these spiders invade our homes, we obviously cannot let it stay there for long. They are too dangerous to ignore. If you have kids and pets, you would not want to use dangerous pesticides. You might be thinking, why not just call the best pest control management in North Carolina ? That is a great option, but if you like doing things yourself and get personal satisfaction from it, then there are some natural ways you can eliminate spiders. Here are some of them.

  1. You may use borax to eliminate the insects that the spiders feed on. Borax is a natural mineral that can be used to kill insects, like ants. Roaches, and termites. Cutting off the food source of the spiders would make them look elsewhere for food, and leave your home. Make sure to wear mask and gloves when handling borax/
  2. If you have apple cider at home, then that’s great! Mix one cup of apple cider, one cup pepper, one teaspoon of oil, and one teaspoon of liquid soap. Put it inside a spray bottle, then spray on areas where you see spiders. Spray again after a few days.
  3. Use essential oils and add them to water. In an empty 16 oz glass spray bottle, pour 7 drops of the essential oil. Then add warm water until about an inch from the top. Add a few drops of dishwashing liquid then shake thoroughly. The purpose of adding dish soap is to break the molecules of both water and oil since they do not mix. Doing this will mix both together. Spray this on areas where you have seen sliders before. Spray it also on possible entry points of the spiders. Use neem, lavender, peppermint, citrus, or tea tree essential oils.
  4. Use ammonia. Mix one part ammonia and one part ammonia in a spray bottle. Spray this around possible entry points for the spiders. Spray this every week.
  5. You can also use the lowly vinegar. Mix one part vinegar to two parts water in a spray bottle. Again, spray these on all possible entry points for spiders, including windows and doors. Spray this every week.
  6. Use diatomaceous earth. Even though this is not a spray, it works just as effectively and you can do it by yourself. Spray this on entry points, or on places you often see spiders. Diatomaceous earth looks like small shards of broken glass. When the spider crawls on it, it would be picked up by their legs and lower body. This would slowly dehydrate them and kill them.


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