Why do I have ants in my house when there's no food around?

Most ants entering Montana homes aren't looking for food at all — they're looking for moisture. Species like odorous house ants and moisture ants are drawn indoors primarily by humidity and water sources, not crumbs on the counter.

Where do moisture-seeking ants usually appear in a home?

Common spots include around bathroom sinks, tubs, or toilets, near leaky pipes under kitchen sinks, along window sills after rain, in damp basements or crawl spaces, and near frequently watered houseplants.

Why don't store-bought ant traps work for moisture ants?

Most store-bought traps are food-based bait, which targets food-seeking ants. If moisture is what's attracting the colony, a food-based bait won't address the actual source of the infestation.

How Cold Does It Have to Be for Bugs to Die in Montana?

MPS
3 days ago
2 min read

Black beetle dusted with snow crawling across a white snowy surface

It's a common assumption: once Western Montana hits freezing temperatures, the bug problem disappears for the year. Unfortunately, that's only partly true.

Most insects don't actually die in cold weather — they adapt. Some slow down, some hide, and some move straight into your home to survive.

What Actually Happens to Bugs in Winter

Insects are cold-blooded, meaning their body temperature matches their environment. When it gets cold, most don't freeze to death immediately — they enter a dormant state called diapause, similar to hibernation. Their metabolism slows dramatically, and they wait out the cold in a protected space.

The real danger to insects isn't cold itself — it's prolonged exposure without shelter.

Which Pests Survive Montana Winters (and Where They Hide)

Pest	Winter Behavior
Wasps & yellowjackets	Only the queen survives, sheltering in wood piles, soil, or wall voids
Spiders	Many species remain active in basements and garages year-round
Ants	Colonies go dormant underground or inside wall voids
Box elder bugs	Cluster in large numbers inside wall cavities and attics
Stink bugs	Seek shelter indoors, often behind siding or in attics
Mice	Actively move indoors seeking warmth — most active pest in winter

The Pests That Move Indoors, Not Away

This is the part most homeowners don't expect: cold weather doesn't push pests away from your home — it pushes them toward it. As outdoor temperatures drop, rodents and several insect species actively seek out the warmth, food, and shelter your home provides.

This is why fall and early winter are actually peak season for rodent intrusions across Western Montana, not a quiet period.

Does a Hard Freeze Help at All?

Sustained, extreme cold (well below zero for multiple days) can reduce populations of certain exposed insects. But anything sheltered in soil, wood, insulation, or wall voids is largely protected from that — which is most of what ends up causing problems indoors.

What This Means for Your Home

Skipping pest control in winter because "the cold will handle it" often backfires. The pests most likely to cause real damage — rodents especially — are at their most active indoors during the colder months.

Worried about what's sheltering in your home this winter? Montana Pest Solutions offers year-round protection built around Western Montana's actual seasonal patterns. Call 406-830-8752 or

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