How to Stop Boxelder Bugs Before They Invade Your Regina Home

Every September, that same wall outside your Regina home gets taken over by a living, crawling mosaic of black-and-red bugs.

They’re called boxelder bugs or maple bugs, and come fall, they’re not just hanging around outside. They’re trying to get in.

They’re not dangerous. They’re not damaging to your home. But finding loads of them on your property or in your living room is no fun. 

Your instinct is to reach for the spray can, but that doesn’t work. And every September, like clockwork, there they are again.

Photo credits to pexels.com

How To Get Rid of Boxelder bugs

By the time boxelder bugs are covering your siding and windows, spraying a few visible insects isn’t enough. Effective control focuses on reducing the population where they’re gathering before they make their way inside.

Our professional treatment typically includes:

• A thorough exterior inspection to identify where boxelder bugs are clustering and the areas most vulnerable to activity.
• Targeted exterior treatments applied to siding, windows, doors, soffits, and other surfaces where boxelder bugs naturally congregate.
• Treating active hotspots instead of blanket spraying your entire property, resulting in more effective control.
• Recommendations to help prevent future infestations, including identifying conditions around your home that may be attracting boxelder bugs.
• A free return visit if activity persists, because seasonal populations can vary and some homes require a follow-up treatment.

How to Keep Boxelder Bugs Out of Your House

Professional treatment helps reduce the number of bugs around your home, but prevention is equally important.

To help keep boxelder bugs outside:

• Inspect and seal window and door seals. Start with south- and west-facing walls, where boxelder bugs congregate most heavily. 
• Repair or replace damaged window and door screens. Even a small tear is a doorway once bugs start actively searching for shelter. 
• Check vents, utility penetrations, and gaps around siding. Anything large enough to fit a fingernail through is large enough for a boxelder bug. 
• Pay particular attention to older homes. Decades of minor settling can open up gaps around door frames and foundation seams that weren’t there originally.
• Look at where your soffits meet the fascia. This junction loosens over time and is one of the most commonly overlooked entry points on a typical Regina home 
• Check weatherstripping around garage doors and any side entries you don’t use often. Infrequently used doors tend to get inspected last, which makes them a favourite quiet entry point. 
• Clear leaf litter and seed debris. Check under and around any Manitoba maples on your property. This reduces both the food source and the gathering point closest to your foundation. 
• Don’t crush bugs you find outdoors. A strong jet of water from a garden hose knocks them off siding effectively without the smell and staining that comes from squashing them. 
• Time it right. Get this done before early fall, when bugs actively begin searching for somewhere to overwinter. Doing it in October after they’ve already found a way in is too late for this season.

Why Does Regina Have Such a Big Maple Bug Problem?

The accepted name for these insects is boxelder bug, named for their host plant, boxelder (Acer negundo), also known as Manitoba maple. Maple bug is the term most commonly used locally.

Manitoba maples are extremely common throughout Regina as boulevard and yard trees, which means the host plant that sustains large populations is essentially everywhere in the city, not confined to a few unlucky neighbourhoods. 

Boxelder bugs are drawn to buildings with large southern or western exposure, and standalone buildings or those taller than their surroundings can attract especially large numbers. Regina’s combination of mature neighbourhoods full of Manitoba maples and open prairie exposure creates close to ideal conditions for exactly the kind of congregation most homeowners here have seen firsthand. 

Maple bugs try to get into Regina homes every fall as they search for somewhere warm to spend the winter. It’s a predictable seasonal event, not a sign that something unusual happened on your property this year specifically.

The Life Cycle: Why They Show Up When They Do

Adults overwinter in sheltered spots, sometimes in great numbers, then emerge in spring to feed on fallen seeds and other insects in leaf litter and on developing tree buds. Bright red nymphs complete development to adulthood by midsummer, and a second, overlapping generation is common through the warmer months. 

By the time most homeowners notice a “problem” in September, the population has actually been building steadily since spring. 

Large aggregations form by late summer, mediated by aggregation pheromones released by both males and females, drawing them to warm, sunny surfaces. Early fall is when they become a genuine nuisance, as they actively seek sheltered overwintering spots and squeeze through tight openings. This is precisely the window the exclusion steps above are designed to beat. 

Population size also varies meaningfully year to year. Fall populations tend to be more pronounced after a hot, dry summer. This means some years genuinely will be worse than others, and it’s not a reflection of anything you did differently.

Why They’re a Nuisance, Not a Danger

Let’s be clear here: maple bugs are unpleasant, not really harmful.

They’re not dangerous to people or pets, they don’t bite in any meaningful way, and they don’t transmit disease. The real issue is what happens once they’re inside. 

They can stain surfaces with their feces, and crushing them releases the same chemical defence compounds that make them distasteful to predators, producing a strong, unpleasant smell. 

Volume is usually what catches people off guard. Gatherings on a single sunny wall can run into the hundreds in a bad year, occasionally more. That’s a genuinely unpleasant cleanup and comfort problem, but it’s not a structural issue and it’s not a health risk. 

Which is exactly why exclusion, not chemical treatment, is the right scale of response. You’re managing a nuisance, not eliminating a threat.

Get Ahead of Boxelder Bug Season

Maple bug season isn’t going anywhere in Regina. The Manitoba maples that sustain it line streets across the city, and they’re not disappearing anytime soon. But this is one of the few pest problems where doing it right once actually solves it for years, not just for this season.

A home with sealed entry points doesn’t just skip this fall’s invasion. It skips next fall too, and the one after that. If you’ve already had a bad year or two, or you’d rather not find out, our Pest Exclusion service identifies and seals the entry points a casual inspection tends to miss. 

Pair that with the Buzz Boss Elder treatment for targeted seasonal coverage, and have the whole thing handled before the first warm wall turns into a few hundred new houseguests.