4 reasons you see houseflies in the winter (and how to stop them)

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Updated on September 20th, 2024

As the cold season sets in, many homeowners are perplexed by the persistence of houseflies, those unwelcome guests that seem to defy the chill.

Here, we’ll explore four reasons why you might find houseflies in your home during winter and how you can effectively prevent and stop them—the Dr. Killigan's way. Join us as we delve into an approach that marries effectiveness with environmental consciousness.

1. Hidden havens: Indoor breeding sites

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As autumn chills creep in, houseflies stealthily slip into your home, escaping the cold. These uninvited guests quickly exploit the cozy warmth to start a secret life behind the scenes. From tiny cracks in your walls to the secluded corners of basements and attics, these spots become their winter sanctuaries for breeding.

Inside your home, not just the obvious spots but even the smallest overlooked areas can become thriving nurseries for these pests. Houseflies have a particular penchant for places where organic waste accumulates—consider the rarely cleaned spaces behind appliances, under heavy furniture or in the shadowy corners of seldom-used cabinets.

Houseflies typically lay eggs in warm, moist environments where decaying organic matter is present, so it's crucial to regularly check and clean areas like garbage bins, compost containers and recycling areas where such conditions may occur. Regularly sweeping these potential hotspots for crumbs and residue, tightly sealing trash bags and decluttering seldom-cleaned areas can dramatically cut down their chances to breed.

2. Warmth seekers: Housefly survival tactics 

Houseflies, known for their annoying resilience, have varied survival tactics during the winter months. While many insects hibernate or perish as temperatures drop, houseflies either find warmth or die. Some houseflies burrow into the earth or take refuge in manure piles, seeking natural insulation from the cold. In urban and suburban settings, our homes—with their controlled climates and secluded spots— inadvertently become ideal sanctuaries for these pests. As winter sets in, the relative warmth of indoor environments acts as a beacon, drawing houseflies from their precarious outdoor conditions into the more stable environments of our living spaces.

Houseflies are ectothermic, relying on external heat sources to regulate their body temperature. During the colder months, they are particularly drawn to the warmer indoor areas of kitchens, bathrooms and utility rooms. Here, they find secluded spots to hibernate, often re-emerging with the indoor heating. These hidden sanctuaries protect them from the cold and enable them to continue their reproductive cycle undisturbed.

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These flies do not remain idle during their stay. They actively seek out food scraps, garbage and pet waste, capitalizing on the resources within our homes. This activity can lead homeowners to mistakenly believe they are experiencing a winter infestation, when in fact, these flies may have been hiding within the home since the onset of cold weather.

For those flies that have already infiltrated, Dr. Killigan’s Fly Inn Flying Insect Trap provides an elegant solution. Designed to blend seamlessly with your home decor, the Fly Inn captures houseflies as they buzz towards window light. Safe for use around children and pets, its sticky surface ensures flies that enter do not escape.

3. Sealing entry points: Preventing winter houseflies

As winter sets in and regular home maintenance slows, unchecked gaps in windows, doors and utility lines become prime entry points for houseflies seeking warmth. These minor oversights can quickly turn into major infestation routes. Proactively sealing these vulnerabilities with weather stripping and caulking is crucial to keeping your home secure. 

tough-on-flies-but-gentle-on-your-home

Following the sealing of gaps, Dr. Killigan’s Dust to Dust Plant-Powered Insect Powder offers a robust layer of protection against houseflies. Applied with the Insect Buster Bulb Duster, this fine powder can reach into even the most inaccessible crevices to create a barrier that’s inhospitable to flies. Simply fill the duster, lightly puff it to disperse the powder into cracks and around potential entry points. This method ensures thorough coverage without mess, making your home a no-fly zone throughout the winter. 

4. Life cycle adaptations: Understanding housefly survival 

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At Dr. Killigan's, we’re not just about controlling pests; we’re about understanding them. And when it comes to houseflies in winter, their life cycle is a fascinating puzzle. Let’s break it down: a housefly’s journey from egg to adult typically whizzes by in just a week or so in warm weather. But come winter, their pace slows, unless, of course, they find a cozy spot in your home. Yes, your snug, warm home can be a year-round breeding ground for these clever critters.

Dr. Killigan's offers insight into their winter behavior. As autumn begins, adult houseflies play a game of hide-and-seek. They slip into homes, finding secret nooks for hibernation. These dormant flies are quite the survivors, waiting out the cold in their safe havens. But, as your thermostat goes up, so does their activity. The warmth reawakens these flies, kick-starting their life cycle all over again, right under your roof.

Regular cleaning and proactive maintenance are vital, but understanding and interrupting the housefly life cycle is key to preventing their takeover. By eliminating potential breeding sites and using strategic, targeted measures to capture or kill flies, we help you maintain a peaceful, fly-free home throughout the winter.

Final thoughts: Embrace a fly-free winter with Dr. Killigan's.

Understanding the 'why' behind winter houseflies opens the door to effective and environmentally responsible solutions. Our integrated strategies, from preventative sealing to targeted trapping, provide a comprehensive approach to managing these pests throughout the colder months.

Explore our full range of products on our website and reach out for personalized advice. Join our community of mindful homeowners who prioritize safety, effectiveness and environmental care. Say goodbye to winter houseflies and welcome peace of mind with Dr. Killigan's—where every season is a celebration of a healthy, happy home.

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