Spider control and extermination can be a major concern for homeowners - particularly for those who live in the southwest. There are about 3,000 species of spiders throughout North America. Most spiders construct webs to trap their prey, which causes an unsightly appearance in and around the structure. Some spiders such as the Wolf spider are free roaming and do not construct webbing. They are mobile in their hunt for prey.
Most spiders are harmless and in fact are very beneficial due to preying upon flies, crickets and other small insects. There are only two types of spiders in the southern and western United States that can cause serious harm when accidentally disturbed - the black widow spider and brown recluse spider. This is why it’s particularly important to only hire well-trained exterminators to eliminate an infestation
Scorpions are nuisance pests that are closely related to spiders, mites and ticks. There are about 1,200 scorpion species in the world and 70 species in the United States. Of these, the most dangerous species is the Arizona Bark Scorpion, which is found in the American southwest and in Northern Mexico
Scorpions are nocturnal pests, so they hide during the day and are most active at night. They feed primarily on insects, especially crickets and cockroaches, and they also feed on spiders. However, they can survive for months without food if water is readily available.
Scorpions live in dry habitats, usually preferring deserts and semi-arid regions. Many species dig burrows in the soil and hide under rocks, logs or debris. During periods of hot weather, scorpions may enter homes through wall voids and take shelter in cool, moist areas like crawl spaces and attics.
While sometimes referred to as a “scorpion bite,” scorpions actually sting as a defense mechanism or as a way to kill prey. Humans will usually experience mild symptoms that are similar to that of a bee sting, such as temporary pain, a burning sensation or localized swelling. However, there are a handful of species around the world that possess more dangerous venom, which can be potentially fatal to humans. The Arizona bark scorpion in the U.S. can deliver such fatal stings.