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When Might You See Rodents in Your Denver, CO Home?

Posted by Mosquito Squad

March 13, 2026

Fall is one of the most beautiful times of the year in Denver. Between the color-changing trees, crisp mountain air, and the view of the snow-topped Rockies, it can feel like living in a painting. Unfortunately, this painting can come with rodents—a very unwelcome addition, if you ask us (and our customers). 

You see, fall is peak season for rodent activity because it prompts them to move indoors to seek warmth as temperatures begin to drop. And because Denver’s winters are often bitterly cold and dry, rats and mice tend to push more aggressively into homes than they would in milder climates. However, just because you live in West Denver doesn’t mean you have to put up with rodent infestations. 

Let’s talk more about what to do if you see a rodent and how Mosquito Squad can help.

The Rodent Problem in Denver, CO

We mentioned earlier that Denver’s harsh winters tend to drive rodents inside in a desperate attempt to survive the season. Because of this, you may spot one or two around this time of year when they’re working their way indoors and potentially building nests. What we didn’t say is that the level of activity can depend on when exactly you see them.

Rodents are nocturnal creatures, so if you have any living in your home, you’ll likely see them around dusk or nighttime when their activity spikes. Keep in mind that while it’s not entirely uncommon to see them during the day, daytime sightings can often signal a larger infestation. In these cases, you’ll want to call a pest control company like Mosquito Squad right away so we can assess the situation and determine the best next steps. 

How Mosquito Squad Can Help With Rodent Control in Denver, CO

At Mosquito Squad, we’re no strangers to rodent control in Denver, CO. Not only do we understand the climate and how it affects these little pests, but we also get the urgency of the situation. That’s why when you call us for support, we’ll be there within 48 hours to perform your first treatment. 

We’ll always begin by performing an initial inspection of your home to identify where and how they’re getting inside. By closing off their entry points, we can help prevent more rats or mice from moving in without your permission. Along the way, we’ll remove any pests and nests we find, and spray your home and perimeter with our core barrier spray (made with EPA-registered products). 

Every three weeks during the season, we’ll come back to check our work and repeat the process, helping your kids, pets, and home stay protected from rodent-related damage.

Looking for Professional Rodent Control in Denver, CO?

Seeing a rodent in your home can be a pretty startling experience, but there’s help available. At Mosquito Squad, our highly trained technicians are experts at rodent control in Denver, CO, and we have our process down to a science. We’ll perform your first treatment within 48 hours (or it’s free!), and return every three weeks during the season to spray again.

In every service, we vow to act with integrity and transparency. To us, that means backing all of our work with a 100% customer satisfaction guarantee and never surprising our customers with hidden fees. 

Ready to protect your Denver, CO, home from rodents and pests? Call Mosquito Squad of West Denver at (303) 997-0166 or contact us online for a free assessment and quote.


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