Does Cold Weather Kill Pests? What Georgia Homeowners Need to Know

Every fall, we hear some version of the same comment from homeowners: “I figure the cold will take care of it.” It’s an understandable assumption, cold weather does kill some pests. But Georgia’s mild winters mean many pest problems don’t go away at all, they just become less visible. And “less visible” is often more dangerous.

What Cold Actually Does to Pests

True cold, sustained temperatures well below freezing, does kill many insects directly. But northeast Georgia winters are rarely severe enough or sustained enough to wipe out established pest populations. Our winters are better described as “cool” than “cold,” with many days in the 40s and 50s and only occasional hard freezes.

Here’s how common pests respond to Georgia winters:

Mosquitoes

Adult mosquitoes die when temperatures consistently drop below 50°F. But their eggs survive winter perfectly well, laid in the soil around standing water, waiting for spring warmth to hatch. A mild Georgia winter barely dents next year’s mosquito population.

Termites

This is the most important one. Subterranean termites, the species responsible for the vast majority of structural damage in Georgia, do not die in winter. They move deeper into the soil where temperatures stay above freezing, and they slow their activity. But they do not stop feeding.

In Georgia’s climate, termites may continue feeding at a reduced pace even in winter. There is no “termite season” the way there is for mosquitoes. Termites are a 12-month threat.

Cockroaches

German cockroaches (the small ones most commonly found inside homes) never experience winter at all, they live entirely inside, in temperature-controlled environments. A roach infestation inside your home will not be affected by outdoor temperatures whatsoever.

American cockroaches and smoky brown cockroaches (the large “palmetto bug” species) can survive mild Georgia winters outdoors in protected areas, leaf piles, mulch beds, under debris, and become active again when temperatures rise.

Rodents

Mice and rats do not hibernate. They’re warm-blooded and active year-round. In fact, winter is the peak season for rodent infestations because mice that spent the summer outdoors have moved inside to escape the cold. A mouse inside your walls in November is there to stay until spring, and reproducing the entire time.

Ants

Most ant species become dormant during sustained cold, retreating deep into their colonies below the frost line. Fire ants build tall, fluffy mounds to take advantage of solar heating. But established colonies survive winter and emerge fully active in spring.

Bed Bugs

Bed bugs live entirely inside and are completely unaffected by outdoor temperatures. Winter has absolutely no effect on a bed bug infestation.

The “Dormant” Problem

Here’s the real danger with the “cold will handle it” assumption: dormant pests are invisible pests. Termites feeding in your crawlspace in January don’t make noise. Mice in your walls in December aren’t leaving as many droppings in visible areas. A cockroach population that’s slightly suppressed by the cold is still a population that will explode again in spring.

Waiting for winter to solve a pest problem usually means the problem gets bigger while you’re not looking.

What You Should Actually Do in November

• Schedule a termite inspection, the best time for a WDO inspection is before spring swarm season, not after
• Have a rodent inspection done if you’ve heard scratching or found droppings, don’t wait until spring
• Continue general pest control service, quarterly programs applied in fall help prevent winter and spring pest pressure
• Inspect your crawlspace for signs of moisture damage, rodent activity, or wood damage

Don’t let winter give you a false sense of security. Contact Kilz Pest Control for a fall/winter inspection and we’ll give you an honest assessment of what’s actually happening on your property. Call or text us at (706) 754-6248. Serving all of northeast Georgia.