Common house spiders and how to control them

Abell Pest Control

Spiders are one of the most common house pests, and though they don't wreak as much havoc as some insects - such as wasps, termites and ants - they're often a nuisance to homeowners. And as the weather cools in parts of North America, many homeowners might find more spiders crawling indoors for warmth. If you've spotted a few new spiderwebs inside recently, here's how to identify and prevent these common arachnids:

Signs of a spider infestation
Spiders often go unnoticed in the home because they typically don't travel in large numbers. However, there are a few signs you might notice. Webs are one of the easiest-to-spot indicators, though the spider that made them isn't always home. If you notice other insects trapped in the web, it's a good indicator that it belongs to Comb-Footed spiders or Orb-Weaving spiders. Wispy cobwebs are usually the work of a triangulate house spider, which are normally not dangerous to humans.

Spider bites are another indicator of an infestation. If you wake up with small red bumps on your skin, it could be the result of a spider bite. However, the University of Minnesota noted that very few species of North American spiders bite people. Spiders may bite if they are disturbed or handled carelessly.

Types of spiders
According to Common Spiders of North America, there are 68 unique families of spiders in North America, each with its own set of species. Most of these tend to live in wooded areas and rarely enter homes. There are, however, several fairly innocuous species that tend to live in houses.

Triangulate spiders

As noted above, cobwebs are usually the work of Comb-Footed spiders such, as the Triangulate spider (also called Triangulate Household Spider). This Family includes the Black Widow spider. According to the University of Nebraska, these spiders probably came to North America with the first European settlers. Aside from their webs, which may be occasionally annoying, triangulate spiders are normally harmless. The best way to control these pests is to keep population of insects down. Regular cleaning and vacuuming are usually enough to prevent large numbers of triangulating spiders in the home.

Ground Spiders
These kinds of spiders are usually black or dark brown in color. They are predator spiders that actively chase their prey rather than wait for it in a web. According to Portland State University, ground spiders usually appear from spring through fall and they tend to stick to dark areas of the home. Again, controlling their prey is the best way to keep ground spiders out of the home. Otherwise, sticky traps can be used, though you need to be wary about using those traps around children and pets.

Orb-Weaving Spiders

There are several types of Orb-Weaving spiders found in North America, including the Marbled orb-weaver, the Fierce orb-weaver and the Cross orb-weaver. Their size is between 1/10 (2.5 to 25 mm) to a full inch in length. Some are pale white while others are yellow and others are furry and brown. Orb-weavers are generally shy, though they may bite if handled. Pennsylvania state university reported that a bite from an orb-weaver isn't dangerous, but similar to that of a wasp sting.

About the author:

Abell Pest Control is a family owned Canadian company dedicated to providing effective, professional and courteous service in pest management.Started in 1924 with one office, Abell now employs several hundred people with branch offices across Canada and the United States.

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