We Provide the Portland/Vancouver Area With Economic & Ecological Solutions for Spider Removal & Prevention.


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Effective Spider Extermination

PestLock is your go-to source for spider control in these NW Oregon and SW Washington cities. Our local exterminators will efficiently identify and remove them from your residential or commercial property with proven pest control techniques that are safe and effective. Call us today to learn more.

Spider Identification

More than several thousand species of spiders exist in the United States. Two of the most common venomous and more common household spiders found in the Pacific Northwest include the black widow and hobo spider. While all spiders produce venom that is poisonous to their normal prey, these spiders have a lethal bite that can cause serious side effects to humans. Please seek medical help immediately for bites stemming from either of these species.

Spider Education

Most spiders are seldom seen, except from late August to early October when they are more active. They usually live in neglected areas, including attics, crawlspaces, and basements. They are also often found behind and under furniture, bookcases, or appliances, and in corners and cracks between boards.

They produce silk that is secreted as liquid and then hardens in the air. Different types and textures of silk may be used to construct snares and webs to capture prey as well as egg sacs, draglines, and ballooning threads. Draglines and ballooning threads are used by spiders to move and/or swing from one location to another. After climbing to a high point, some spiderlings will release ballooning threads to disperse themselves to new areas. The young are then seen sailing through the air on wind currents that have caught the ballooning threads. Depending upon the species, spiders lay eggs within a silk egg sac that is often ball-shaped and either hidden in the web or carried by the female. They may produce several egg sacs, each containing several hundred eggs, or as many as 3,000 eggs in a series of several sacs over a period of time. Eggs may hatch a few weeks later, or they may not hatch until the following spring. After molting four to 12 times, all spiders reach adulthood in about a year. Most spiders live either one to two seasons, and some may die as soon as they mate or produce egg sacs.


Customer Preparation for Spider Control Treatment


  • Use a strong suction vacuum cleaner with proper attachments to collect and destroy webs, egg sacs, and spiders.
  • Use a dust mop, stiff broom, and dustpan as needed to discourage any new spiders.
  • Move and dust behind and under furniture, stored materials, wall hangings, and corners of ceilings as often as possible.
  • Eliminate other household pests such as flies, ants, and cockroaches as they attract spiders.
  • Seal or caulk cracks and crevices around windows and doors.
  • Install tight-fitting screens as needed to prevent spiders from entering the house from outside.


  • Control excess moisture and humidity by keeping basements, crawlspaces, and porches as dry as possible.
  • Clean up outdoor woodpiles, trash, rocks, compost piles, old boards, and other debris, especially around the foundation.
  • Use a hose with high-pressure water to knock down and destroy webs, egg sacs, and spiders on the outside of the home.
  • Use yellow or sodium vapor light bulbs around the outside entrances to reduce night-flying insects, which attract spiders.

Customer Expectations Following a Spider Control Treatment

Spiders will act abnormally prior to death. Either more or less will appear, climbing up walls to flee from treatment. Some may even appear from crawlspaces to die. Expect additional activity within the next 30 days as spiders continue to track through the residue. Our products will not only kill spiders on contact, but it will act as a repellent by leaving a long-term residue that outlasts their life cycles.

Let us help lock spiders out of your home or business