Should You Be Worried About the Spiders in Your Denver, CO Home? Spider Control, Pest Control, & More
Posted by Mosquito Squad
March 9, 2026
Identifying Your Need for Spider Control in Denver, CO
With promises of spring and sunnier days, it can feel encouraging to daydream about days outdoors. As you picture the days ahead, you begin to imagine sitting on the porch, hanging out in the backyard, or even just relaxing on the couch with the windows open.
Unfortunately, those dreams can quickly turn to worry as the promise of spiders and pests come to the surface. While most Denver, CO, spiders are harmless, there are a few medically significant species to consider.
Cellar spiders, house spiders, and even wolf spiders dominate most of the real estate within your home. These pests enjoy dark corners, low-traffic areas, and undisturbed areas such as attics and garages. While those aren’t too worrisome, there are two specific species in Denver that warrant concern: the black widow and the yellow sac spider.
Instead of wondering when these pests will appear, what if you could create a barrier for your home with spider control services?
Common Spiders in Denver, CO
There are a few ways to identify the types of spiders in your Denver home.
Wolf spiders are large, hairy, and brown or gray with patterns that help them to hide and blend in with their environments. As a hunting type, they don’t usually hide in high corners or build webs in order to catch their prey. Instead, wolf spiders enjoy the thrill of the hunt and typically hide in areas such as brush, leftover leaf litter, gardens, or other areas of the home that create easy hunting access.
Cellar spiders, also known as daddy long legs, are the most common type of spider found in homes. These thin, long-legged, and slow-moving spiders prefer to build webs in dark and quiet spaces, hoping to catch unsuspecting prey while remaining out of high traffic areas.
While the first two species are common and usually harmless, there are two additional species of spiders that are important to recognize. These medically significant spiders are the yellow sac spiders and the black widow.
Yellow sac spiders are some of the more sneaky species of spiders. These pale yellow spiders are small, fast-moving, and nocturnal, and hide out in bushes or tucked away areas such as ceilings or quiet corners. The nocturnal nature of the yellow sac spider allows them to hide in the day and roam freely in the night. Preferring to be left undisturbed, these tiny spiders don’t bite humans unless threatened. While their bite is known to be venomous, it’s not poisonous, and generally results in redness, swelling, or a stinging sensation.
Lastly, and most importantly, the infamous black widow spider. Black widow spiders are rare sightings in Denver homes, but it’s important to know the signs. These spiders are black and glossy with red hourglass markings on the underside. Black widows typically love dark, undisturbed areas of homes or outdoor spaces where they can hide in plain sight.
While these are just a few species of spiders, it’s important to know the visual identifiers and avoid trying to handle any spider you are unsure about. If you want peace of mind, then it’s best to look into spider control treatments.
Denver, CO Spider Control Treatments
While most spiders are harmless, it’s important to remember their purpose. Spiders help control pests such as ants, gnats, flies, and other pests, but an abundance of spiders can signal an abundance of unknown pests.
Our pest and spider control services are created to help build a barrier between your home and the pests that want to get inside. These pest and spider control services are applied on a rolling 3-week basis to not only control the current population, but to mitigate any further infestation. Our natural treatment blend was made with the environment and your health in mind, meaning that your family and pets are welcome to return to your backyard only 30 minutes after application.
Remember, if you notice any strange and worsening symptoms such as worsening pain, swelling, or necrosis, then it’s important to seek proper medical attention.
For Reliable Spider, Pest Control in Denver, CO Near You
Spiders can be a helpful part of the natural ecosystem, but that doesn’t mean you have to enjoy them creeping into your spaces. Our spider control services in Denver, CO are here to help you reclaim your home and your peace of mind.
Ready for a spider control check-up? Call Mosquito Squad of West Denver at (303) 997-0166 or contact us online for a free assessment and quote.
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