There are over 35,000 known spider species worldwide, but only a handful are considered to be dangerous and 27 species are known to cause human fatalities.
Spiders are attracted to warm, dark small spaces, like wall cracks, corners, air vents and in the washroom. However, some species prefer to stay closer to the outdoors, weaving their webs in your garden or near your outside lighting.
Although most common spiders at home are not really harmful, they can be a nuisance because of their webbing and can induce fear to some people.
How Did I Get Spiders?
Loose screens and cracks under doors, windows, and other openings are all possible entryways for a spider. These pests may move indoors while searching for food, mates, warmth, or moisture. The presence of insects and other prey in homes is a common reason for spiders to come inside. Spiders are also accidentally introduced inside homes when they are unknowingly introduced to the home’s interior via infested items such as plants, firewood, clothing and other items stored in attics, basements or other storage areas.
How Serious Are Spiders?
While most spiders pose little or no danger to people, some species can deliver venomous bites that may cause medical issues. The two most common venomous spiders are the brown recluse, distinguished by the violin-shaped marking on the top of its cephalothorax, the body part consisting the spider’s fused together head and thorax. The other important venomous spider is the black widow, notable for the red hourglass shape on the underside of its jet-black abdomen.