Pest Control in Fort Collins, CO
Dealing with a pest problem in Fort Collins? You're not alone. mice, voles, ants are among the most common household pests in the Colorado Front Range — and they're active year-round.
Fort Collins' older neighborhoods near Old Town and the Cache la Poudre River corridor see consistent rodent activity. Mature tree canopy, aging housing stock, and the university rental market all contribute to higher-than-average pest pressure in the city's core neighborhoods.
Common Pests in Fort Collins
- mice
- voles
- ants
- wasps
- spiders
- earwigs
- boxelder bugs
Pest Activity by Season
spring
Ants emerge as soil warms. Wasp queens begin scouting for nest sites. Mice move back outdoors but may still enter structures.
summer
Peak wasp and ant activity. Brown recluse and black widow spiders active. Voles damage lawns and garden beds.
fall
Primary rodent season — mice and voles seek indoor shelter as temperatures drop below 40°F. Boxelder bugs congregate on south-facing walls.
winter
Indoor rodent activity peaks. Overwintering insects shelter in wall voids and attic spaces.
Fort Collins is home to Colorado State University and sits along the Cache la Poudre River — Colorado's only nationally designated Wild and Scenic River, which runs through the city before heading into the foothills.
Learn More
Browse all pest control guides →Get connected with a local expert
- ✓Free quote — no obligation
- ✓Licensed & insured professionals