There are various species of spiders found throughout Washington and the Puget Sound region. While spiders in general can be beneficial in the elimination of other pests, their bites should be avoided.


When inspecting a potential spider infestation, our technician will determine:

  • The species of spider that is of primary concern

  • Conducive conditions contributing to the infestation

  • Specific areas where spider activity is highest

When treating for a spider infestation, we focus our treatments on the interior, exterior, and underside of a home or building. It is important to note that homes located near wooded areas or bodies of water tend to have higher populations and varieties of spiders.

Overgrown vegetation is high on the list of conducive conditions for spider infestations. Vegetation that is near or touching a home is extremely attractive for spiders, as it allows for easy web building. Whenever possible, we recommend trimming vegetation away from the home or building.

As insects are a primary food source, spiders tend to populate areas of high insect activity. Our spider treatment process will focus on both eliminating the spider infestation and minimizing their food source.


At Sentinel Pest Control, our job is to ensure that your home is free of pests year-round—our comprehensive service packages are designed to do just that! Tailor-made to meet the needs of Western Washington residents and businesses, our pest control service packages will both remove pest infestations and prevent future ones.

Interior Spider Treatment

The interior of the home or building will receive a crack and crevice liquid spray, as well as glue board insect traps placed in strategic locations. If necessary, we will knock down any webs that may be present on the interior.

Underside Spider Treatment

Crawlspaces are dark and often damp places where spiders like to hang out. While treating the underside of your home or building, we will fog the crawlspace with a residual insecticide, killing any spiders or other insects that it contacts.

Exterior Spider Treatment

Your technician will treat the exterior of the home or building using a 360-degree perimeter band treatment including:

  • Foundation

  • Walkways

  • Fence lines

  • Patios

  • Under and around decks

  • Around windows

  • Doors

  • Light fixtures

  • Eaves

  • Any accessible overhangs

During the exterior treatment, your technician will remove all webs and spider egg sacks by sweeping the structure with a webber pole to further reduce the population.


We understand that your needs can be urgent. Our goal is to provide you with a pest-free home or business as quickly as possible. Call before noon Monday – Friday and a Sentinel professional will be at your door the SAME DAY!


Have any pest related questions or in need of pest control services?

Our office staff is trained to answer any pest control related questions! Once scheduled with us, an appointment confirmation will be emailed within 15 minutes with your appointment information and a picture of your technician!


We’ll give you a call and schedule the best time for you!





“While remodeling our house 4 years ago, we found termites in the walls. I called around and Sentinel Pest Control was able to come out the same day. They took a look at our problem and educated us our pest problem and provided us with the best solution…”

ALYSSA, Google Review

“I highly recommend the sentinel team to take care of your needs. They came out to my house after I saw some unwanted spiders and right away knew what they were and solved my problems. I was even able to message them pictures of the bugs…”

AJ, Google Review

“I had the pleasure of speaking with the service manager, Wayne. He was incredibly helpful and actually talked me out of hiring a professional exterminator. If I ever need pest control services I won’t call anybody else. Highly recommend calling them!”

VICTORIA, Google Review

“While remodeling our house 4 years ago, we found termites in the walls. I called around and Sentinel Pest Control was able to come out the same day. They took a look at our problem and educated us our pest problem and provided us with the best solution…”

LISA, Google Review

“I have been using these guys for over a year. My house has a greenbelt behind it and we used to have a lot of spiders and bugs in the house. Now it is very rare to find any! I have brought up concerns and they are very receptive and willing to listen and help anyway they can…”

TAMARA, Google Review

“I highly recommend this company for your pest control needs. We used Sentinel Pest Control yesterday for a yellow jacket removal and our technician Markus was very professional, knowledgeable & displayed caring and compassionate customer service…”

CRYSTAL, Google Review