Pest Trends

Pest Trends

This week in your region

Seasonal pest issues

Colorado’s dry climate, big temperature swings, and short but intense seasons mean pest pressure can shift quickly: ants and termite swarmers in spring, mosquitoes, ticks, and wasps in summer, and rodents, spiders, and occasional invaders moving indoors as the weather cools. Check back regularly for seasonal outlooks, emerging problems, and public health updates like West Nile virus activity, along with tips on what to watch for and how to stay a step ahead of pests before they become a bigger problem.

+55% voles · up over the past 3 weeks
FRONT RANGE · Fall 2026

Vole populations peak in fall, just before snow gives them cover. Treat now and protect your trees, before they chew bark all winter unseen.

Weather driver
Fall breeding peak before snowfall
  • Deer Mouse+85%
  • Pocket Gopher+25%
  • Cottontail Rabbit-10%

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