Spiders perform a vital service to the natural world by controlling insect populations. However, they can become a nuisance inside human habitation while some species of spider are a threat to human health. For these reasons Warminster homes and businesses should seek a professional exterminator for their spider control issues.


Spiders are members of the arachnid family, which means they all have eight legs and two body sections. While they may have three or four pairs of eyes, they do not have antennae. Spiders are further diversified from insects because of their silk-extruding spinnerets. Several spider species are found in Warminster and throughout most of Pennsylvania and New Jersey.

Common house spiders are gray or brown and may have chevron markings on their bodies. Females may be up to twice the size of males at a maximum of eight millimeters in length. Though they may bite, they present little danger to people.

Yellow garden spiders are larger, with the females measuring as much as 30 millimeters in length. Males may only grow to be eight millimeters. Their distinctive black and yellow coloring makes them easy to spot in the garden.

Sac spiders range in size from small to medium, and are typically yellowish or light-colored depending on the particular species.  Most common throughout the Warminster area that of the agrarian-sac spider, broad faced sac spider, and the long-legged sac spider.

Wolf spiders may measure up to 35 millimeters in length. Their body is dark brown and features gray hairs. Large fangs give this species a fearsome reputation and a painful bite.

Brown recluse spiders are sometimes encountered in Pennsylvania and New Jersey. They are distinguished from other species by having longer legs, with a violin-shaped marking on their backs. Their bite can cause health concerns for people.


Spiders are unable to chew, which limits their diet to insects that become trapped in the spider's web or that they are able to catch. Their inability to chew and the small size of their stomachs make it necessary for spiders to secrete a liquid digestive enzyme in their saliva so that their meal can be partially broken down before it is consumed.


Spiders are known to inhabit nearly every environment on the planet with the exception of the ocean. In general, they prefer to be outdoors where they may build a nest or web in trees or plants. Other species, like the wolf spider, prefer an underground burrow. Some spiders are drawn around and into human habitations while searching for prey. Species that prefer dry habitats may be found in the upper corners of rooms or in attics. Other species prefer damp conditions, causing them to live in crawl spaces and basements or near leaks. Spiders tend to be wary of humans, so they frequently select darker areas.


Although most species of spiders found in Pennsylvania and New Jersey pose little threat to humans,
people frequently feel uneasy around spiders. Home and business owners also may find that the webs spun by spiders are a nuisance to dispose of and that they detract from the overall attractiveness and livability of a building.


Most spider species are nocturnal, which means that they do most of their web spinning and repair work at night. Other species, like garden spiders, tend to be more diurnal. Regardless of their nocturnal or diurnal preferences, spiders are generally afraid of humans and will always try to avoid contact. Methods of avoidance may vary depending on the species. Some will run while others will jump or drop. Some species will agitate their web with the hope of frightening off a predator.

Although spiders are shy and avoid human contact, they will bite if provoked. Typically, this happens when the spider is trapped somewhere such as inside a shoe or a pant leg. The spider instinctively tries to escape after delivering a bite.


Though rare that medical problems will arise due to bites from spiders commonly encountered throughout Pennsylvania and New Jersey, some bite victims can experience lesions or swelling, sometimes accompanied by a headache. People with a compromised immune system are more likely to suffer this type of adverse reaction. Immediate medical attention may be required. It may be helpful to bring the spider to the doctor for identification.


A spider infestation is likely when the following signs are present:

Seeing spiders in a residence or other building
Webs or nests in corners and dark places


It may be possible to prevent a spider infestation using these tips:

• Make certain windows and doors are tightly fitted
• Cracks or gaps in the exterior of a building should be sealed
• Use screens on windows and doors
• Check boxes, packages and produce for spiders before bringing them into a home or other building


Spider control involves identifying the species of arachnid so that proper eradication techniques can be used. A well-trained technician can employ safe, effective methods that solve the problem without risk to people and pets.

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