Rodent Season in Chicago — How to Keep Mice and Rats Out This Fall
Every fall as temperatures drop, mice and rats begin seeking warmth inside Chicago homes and apartment buildings. Sleep Tight provides comprehensive rodent control and exclusion services — trapping what's inside and sealing the entry points that keep letting them back in.
Same-Day Rodent Control & Exclusion Available Citywide
When Does Rodent Season Begin in Chicago?
Chicago's rodent migration begins in September as nighttime temperatures fall consistently below 60°F and accelerates through October and November. By December, most indoor rodent infestations are well-established and breeding.
Chicago has been ranked the rattiest city in America for nearly a decade. Aging sewers, alley dumpsters, and gangway gaps give Norway rats easy access to most neighborhoods.
Exclusion Is the Only Long-Term Fix
Trapping alone never solves a rodent problem. Mice can squeeze through openings the size of a dime; rats through openings the size of a quarter. Sleep Tight's rodent program includes a full exterior inspection to identify and seal entry points around foundations, utility penetrations, garage doors, and rooflines.
Once entry points are sealed, interior traps eliminate the rodents already inside — and they stay gone.
Frequently Asked Questions
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Same-day service available across Chicago. Call now or schedule online.