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Woodlouse Spider Identification and Control in Utah

Correct identification is an important first step in pest control.


The woodlouse spider has a reddish head area with cream to gray colored abdomen. Their mouthparts and fangs protrude directly in front of the head, giving a menacing appearance. They also have six eyes.

Woodlouse spiders can be found under rocks, bark, trash cans, mulch, plants, wood piles, etc. Prefer moist areas where isopods live.

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Thorn Pest Services Identify the pest with our Woodlouse Spider gallery

Are they dangerous
Are they dangerous

Woodlouse spiders appear menacing because of their large, forward-projecting mouth parts and fangs. They are not known to be a health hazard and should be considered beneficial.

Learn more by reading our blog post: Utah Spiders: Guide to Identification and Prevention.


Dysdera crocata




Nocturnal, meaning they are awake at night

Thorn Pest Services Tips for keeping woodlouse spiders away

How To Keep Woodlouse Spiders Away
Pest control experts
  • Minimize thick mulch that attracts isopods (potato bugs) around the property.

  • Seal exterior cracks and crevices especially on main level and basement.

  • Install tight-fitting door sweeps at the base of all exterior doors.

How To Get Rid of Spiders
Pest control experts
  • Vacuum individuals that enter buildings.

  • Step on, or smash individual spiders that enter buildings.

  • Catch and release (with a glass jar) spiders found indoors.

  • Use pest monitors to capture invading spiders, especially between August and October. These work very well at capturing and monitoring woodlouse spiders.

  • Reduce moisture issues around buildings and eliminate isopods which are their primary food source.

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Pests can be difficult to control, but that’s what we are here for. We create a strategic plan to gain control of your problem and make sure we get results.

Thorn's Approach

We take a scientific approach to pest control. We start with an inspection and assessment to help us identify the pest, locate where they are, and create a specific plan for your property. Every home and business is different and requires a unique strategy.

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Thorn Pest Services

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Proper pest management starts with a detailed inspection and assessment from an expert pest professional before treatment. Thorn Pest Solutions uses a three-step process rooted in science to eliminate pests with long-term results.

Assess Situation

First, we identify the root problem(s) with a site assessment. Pests are almost always an indicator of an environmental condition. This will determine the best actions to provide short and your long-term results against pests.

Execute Action Plan

Next, we develop a plan to fix the problems we discovered. This includes solving current pest issues, eliminating conducive conditions, and monitoring for future pest activity. Good pest management starts with a good plan.

Track Success

Lastly, we implement the solutions we developed including inspection, monitoring, and preventing future pest infestations. Good pest control requires a good offense and not just defense. Prevention is key.

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