Spiders in Denver, Colorado
Colorado is home to many different types of spiders – garden, house and poisonous. Among the most common indoor spiders are funnel web spiders, cobweb spiders, cellar spiders and sac spiders. Though these spiders do not pose a medical concern, large populations can become a nuisance. Infestations typically occur in dark, moist areas that provide limited human disturbance – garage areas and basements are examples of ideal indoor habitats.
Wolf spiders may appear menacing, but are generally considered harmless. They can range from 1/2″ to 2″ in length and typically live in garden or field areas. Wolf spiders do not construct webs, but rather hunt their prey. Occasionally they will enter homes if their natural habitat is disturbed.
NOTE: Due to their brown patterning, Wolf spiders are sometimes misidentified as Brown Recluse spiders.
Though most spiders are harmless and beneficial to the ecosystem, Colorado is home to the Western Black Widow spider which is known for its distinct “hourglass” marking on the underside of the abdomen. Mature females are typically black in color and have a bulb shaped abdomen. The males have more variation in color and a longer abdomen. Females typically spin cobwebs in dark corners or holes near the ground. Thy have also been know to use rodent burrows, wood piles, well houses, electrical boxes or other secluded areas as a place to live.
Western Black Widow spider bites are poisonous to humans. Though the spiders are not typically aggressive, they will bite if disturbed. Neurotoxins in the venom can cause muscle or chest pain, abdominal discomfort, swelling of the extremities, anxiety, restlessness, or difficulty breathing and speaking. If you have been bitten and are experiencing any discomfort contact your physician or other health professionals.
Brown Recluse spider bites are also poisonous to humans. However, it is important to note that Brown Recluse spiders are rare in Colorado. The spider’s common habitat includes the mid-western and south-central states. Brown Recluse spiders can be brought into Colorado from the common habitat regions, but rarely survive. The Denver Museum of Nature and Science can identify any suspected Brown Recluse specimen.
Whitmore Pest Control offers one-time spider extermination treatments as well as ongoing service plans. Our technicians can offer peace of mind by thoroughly treating common spider breeding areas. Proactive treamtent is key to maintaining control of spider populations on your property.
**For more information regarding common spiders in Colorado, visit Colorado State University’s article “Spiders in the Home.”
What our customers are saying:
Whitmore Pest Control was very courteous and informative. Marvin took great care of our home and was sure to answer any and all of my questions. We had a small mouse issue and a large spider issue. I’ve only seen 1 spider since Marvin completed the work and it was the day after he sprayed, and the spider was already dead. I’m very pleased, and will be recommending Whitmore’s services to others.”
-Mrs. S. of Denver, CO
“Very knowledgeable, nice and professional service.
Since they have started spraying my yard and house I haven’t had any spiders or bugs in my house, they always go out of the way to do an excellent job and even informed me last time that we might have a bat living in our awning due to the bat droppings near our door. They are always professional and courteous and I would recommend them and do recommend them to everybody I know.”
-Tom D. of Castle Pines, CO