The majority of species of spiders do not pose any threat to humans and do in fact aid in the control of insects. Given this, experts will frequently recommend that spiders are not extinguished but instead are captured and then set free in an alternative environment.


This is obviously the best approach, though it is not always the most practical methodology for some people, particularly so when the sight of a spider strikes fear into the heart of an unwary soul.


Here, we discuss measures on how to prevent house-bound spiders and also how to eradicate them through both chemical and non-chemical means when they do enter your home.


A common house spider (Tegenaria gigantea) trapped in the bath. Space for text on the white of the porcelain. Keeping Spiders Outside

Spiders have a tendency for spinning webs in areas that are quiet and secluded. In order to discourage web production from in and around your home:

– Maintain any supplies of logs and firewood at a distance from your home. Clean up leaves as they fall and other forms of organic debris in the yard. Any trees or shrubs that contact your home?s exterior should be trimmed back.

– Caulk/ seal any gaps and cracks within your home?s structure, more so around doorways and foundation windows.

– Doors and windows should fit tightly to their frames. Screening should be devoid of holes and tears. Install sweeps at the base of exterior entryway doors.

– Reduce insect numbers that serve to attract spiders by exchanging any standard mercury vapor lights for halogen or high pressure sodium vapor lighting. It?s common to position lighting on exterior walls near entryways, but it is better to position these lights at a distance, whereby the lighting source is focused on the door.

– Any piles of clutter such as bags, boxes, and papers, should be eliminated to reduce potential areas for harboring insects and spiders.


Non-chemical control

Spiders that are nesting within the home?s exterior can be removed by spraying them with water which is directed from a high-pressure hose. They can also be sucked into a vacuum cleaner, or brushed away using a long-handled broom. Do also be sure to remove the egg sacs.


Indoors, web-generation can be discouraged through frequent sweeping and vacuuming of closet spaces, basements, corners, and various other out-of-the-way locations.


Whenever sweeping, vacuuming, or otherwise eradicating webs, do also remove the egg sacs to avoid the birth of future generations.


If you must, a rolled-up newspaper or fly swatter may be used to exterminate individual spiders. And when doing that, it?s a prudent idea to then locate the web and destroy it to reduce the chances of egg hatch.


By all means utilize Integrated Pest Management (IPM) strategies, to include sanitation, prevention, and exclusion, as a way to reduce insects overall. This will impact spider numbers both in a direct fashion and indirectly, since it will lower the food source.


Check plants, firewood, and boxes prior to bringing those items into your home so as to stop any spiders from hitching a free ride.


Spiders and chemical control

Residual pesticides which are sprayed into cracks, crevices, and below siding where spiders tend to harbor is a good way to reduce spider webs. Do, however, use only those pesticides that are labeled for use against spiders, and also for the areas that you wish to make your applications. According to the label, feel free to reapply as and when.


Pyrethroid and pyrethrin space sprays eliminate spiders when direct contact is made, though these chemicals have limited residual impact, if any. As such, applications should be made in such a way that both spiders and webs are contacted. Use of a space spray will necessitate repetition whenever spider eggs hatch.


A light application of liquid insecticide or aerosol which has been labeled as appropriate for spiders can be invoked into gaps and cracks to offer some level of control.


Pesticide dusts may also provide control in areas that are secluded. Dust that comes into contact with webs will then adhere and be consumed by the spider while they ingest the web in order to produce more.


Spider identification

Various species of spider pose a danger and thus require immediate elimination. It is therefore important to make an identification of the species prior to attempting control.


Whenever a species that is dangerous is identified, for example the brown recluse, black widow, or hobo spider, it is pertinent to get in touch with a professional in the field of pest management.