How Season Changes Affect Pest Activity In Colorado

Colorado's Seasons Bring Changing Pest Challenges

In Colorado Springs, Denver, and along the Front Range, every season tells a different story—not just for the weather, but for the pests that come with it. As temperatures swing from snowy lows to sunny highs, bugs and rodents adjust their routines. Spring might bring ants marching across the kitchen, while late summer could mean mosquitoes and ticks buzzing around the backyard.

Being proactive about pest control is more than a comfort—it’s about protecting your home and family. Knowing what pests to expect and when they’re most active helps you stop problems before they start. Here’s a look at how each season affects pest behavior across Colorado Springs and nearby areas like Denver and Pueblo—and what you can do to stay ahead.

Spring in the Rockies: Time for Pests to Wake Up

After a long winter, spring brings more than just flowers and green grass. It also signals the return of bugs that have been dormant or hiding out. Melting snow, spring rains, and warming days create the perfect conditions for pests to reemerge and look for food and shelter.

Common spring pests in Colorado include:

• Ants: These foragers sneak into homes in search of crumbs, sweets, or greasy leftovers.
• Termites: Swarming season kicks off in spring as colonies grow and spread.
• Spiders: Often more noticeable as they move around to find prey.

Moist soil and new plant growth around your home can attract pests. Plus, small openings near foundations or siding give them easy access inside.

Spring prevention tips:

• Seal gaps around plumbing, windows, and doors.
• Store food in airtight containers and clean surfaces daily.
• Remove mulch, leaf piles, and standing water near your foundation.
• Trim bushes and tree branches that touch the house.

Early spring is the perfect time to do a home inspection—check your garage, basement, and garden shed for signs of pest activity before things escalate.

Summer in Colorado: Prime Time for Outdoor Pests

Even with the dry heat of Colorado summers, pests don’t slow down. In fact, warm temperatures often speed up insect life cycles, leading to booming populations.

Whether you’re spending time in your backyard, heading to Garden of the Gods, or enjoying a hike in Palmer Park, you’re more likely to cross paths with pests like mosquitoes, fleas, and ticks.

Summer troublemakers include:

• Mosquitoes: Breed in birdbaths, clogged gutters, and flowerpot trays.
• Ticks: Hitchhike on pets or clothing, especially after outdoor fun.
• Wasps: Build nests under eaves, porches, and in wall voids.

Tips for a pest-free summer:

• Dump standing water weekly.
• Mow regularly and clear weeds near fence lines and sheds.
• Check pets for ticks and wash their bedding frequently.
• Bring in pet food and water bowls at night.

Think of a family campout in the backyard turning into a week of itchy tick bites—it's a common Colorado summer mishap that can often be avoided with a little preparation.

Fall in Colorado Springs: Pests Look for Shelter

As the days grow shorter and cooler, pests go on the move—right into your home. Rodents, spiders, and fall-invading beetles all start looking for warm places to ride out the winter.

What to watch for in fall:

• Mice: Can squeeze through tiny holes and nest in attics or basements.
• Spiders: Follow food sources indoors and settle into dark corners.
• Beetles & Boxelder Bugs: Often enter through gaps near chimneys or windows.

How to prep your home for fall:

Seal exterior cracks and holes, especially near the foundation.
Use caulk, foam, or steel wool around pipe openings and dryer vents.
Declutter basements and garages to limit hiding places.
Stack firewood at least 20 feet from your house and keep it raised off the ground.
Nobody wants to find mouse droppings in the same box as their Halloween decorations. Fall is the time to seal things up before pests move in.

Winter on the Front Range: Quiet Outside, Busy Inside

Don’t let the snow fool you—some pests stay active all winter long, especially indoors. Once they’ve found a way into your warm home, they hunker down and become unwelcome winter roommates.

Winter invaders include:

• Boxelder bugs & beetles: Often found near windows or light sources.
• Cockroaches: Hide near heat sources or inside walls.
• Spiders: Prefer undisturbed areas like basements and behind furniture.
• Rodents: Stay active all season in wall voids or insulation.

Keep your home pest-free through the cold:

• Vacuum frequently, especially along baseboards and under furniture.
• Store pantry food in sealed containers.
• Inspect for damaged weather stripping or torn screens.
• Avoid storing cardboard boxes on the floor—use sealed plastic bins instead.

Because homes stay sealed up tight for warmth, even a small pest problem can feel magnified. A clean, clutter-free home makes it harder for pests to stay hidden.

Pest Control Is a Year-Round Job

In Colorado, sudden warmups in January or an early rainy fall can throw pests into action even when you don’t expect it. Consistent awareness and small preventative habits can make a huge difference—whether you’re in Colorado Springs, Castle Rock, or up the road in Denver.

Year-round pest control tips:

• Schedule seasonal inspections with a trusted local expert.
• Keep outdoor trash cans sealed and positioned away from exterior walls.
• Repair plumbing leaks quickly to eliminate indoor moisture.
• Upgrade old screens or seal dried-out caulking to block entry points.

You might not notice pests until they’ve already settled in. Routine checks and early action are the best way to break the cycle before it starts.

Need Help Keeping Pests Out Year-Round?

No matter the season, pests in Colorado know how to take advantage of changing weather. From springtime ants to overwintering rodents, each season brings something new. But you don’t have to handle it alone.

With year-round pest control solutions tailored to Colorado’s unique climate, EnviroPest helps keep homes across Colorado Springs and the Front Range pest-free. If you're ready to stop reacting to pests and start preventing them, we’re here to help.

Explore our Enviro Guard exclusion program and home pest control services today—and take back your peace of mind through every season.