If you have lived in Toronto for more than a few years, you have probably noticed it. More rats in the alley behind your street. A neighbour trading war stories about their garage. A scurry across the sidewalk at dusk that makes you jump. It isn't your imagination. The pattern is real, it's getting worse, and any licensed GTA team like Quality Affordable Pest Control will tell you the calls have been climbing for years.
The numbers are not subtle. Toronto's rodent-related complaints climbed from around 1,165 in 2015 to 2,523 in 2024. That's roughly double in under a decade. A 2025 study published in Science Advances looked at rat sighting data across 16 cities and ranked Toronto third for rising rat numbers, behind only Washington and San Francisco. Toronto even edged out New York City, which got so overrun it hired an actual "rat czar." Not the kind of ranking a city brags about.
So what changed? A few things at once, which is usually how these problems sneak up on a city.
Warmer Winters Are Doing the Rats a Favour
Here's the uncomfortable truth. Cold used to be the city's best exterminator.
A hard Toronto winter with weeks of deep freeze knocks back rat populations naturally. Foraging gets harder, nesting gets harder, and a chunk of the population simply doesn't make it to spring. But our winters have softened. Climate researchers estimate Toronto has lost close to two weeks of below-freezing days over the past decade. Milder winters mean rats stay active longer, breed more often, and head into spring with a running start.
Ask anyone who deals with rodents for a living and they'll tell you the same thing. January and February used to be the slow stretch. Now those months are some of the busiest. When the natural die-off doesn't happen, colonies that used to thin out just keep growing.
More People, More Construction, More Food
Toronto is booming, and rats love a boom.
The region's population has pushed past 7 million, and every new resident generates garbage, food waste, and shelter that rats are happy to use. Then there's the construction. Condo towers, transit tunnels, road work, basement digs. All of it disturbs the ground where rats already live and pushes them out into new territory, often straight into the residential streets and homes nearby.
It's a common story around the city. A tidy, decades-clean home suddenly has rats, and two blocks away a lot is being excavated for a new build. That's usually the answer. When you tear up a rat's neighbourhood, it moves into yours.
The older, denser parts of the city feel it most. Places like Leslieville, Cabbagetown, and the pockets around Kensington were built long before anyone was thinking about rodent-proof foundations, so the housing stock is full of the small gaps and aging drain lines rats exploit. Add a laneway, a restaurant strip, and a green bin on every porch, and you have close to ideal conditions.
The ways rats get into a GTA home are pretty predictable once you know what to look for:
- Gaps around pipes, vents, and utility lines, some no wider than a loonie, which is all a rat needs to squeeze through
- Uncapped or broken drain lines that connect straight to the municipal sewer system
- Open garbage and green bins, backyard compost, and fallen fruit or birdseed acting as a steady food source
- Cracks in old foundations and gaps under garage doors and porches that make for easy entry points
What the City Is Doing About It
Toronto has finally started taking this seriously. The city rolled out a Rat Response Plan launching in 2026, with a coordination team and dedicated staff to manage inspections and enforcement across neighbourhoods. It even pushes big construction and transit projects to factor in rat control before they break ground, which is long overdue.
That's good news for the long haul. But a citywide plan doesn't help you when you hear scratching in the wall at 2 a.m. Municipal programs move slowly, and they were never designed to solve one family's infestation fast.
How Quality Affordable Pest Control Handles a Rat Call
Here's the part worth being blunt about, because plenty of people try to handle rats themselves first and lose.
DIY traps and hardware-store poison can knock out a rat or two, but they almost never solve the real problem. Rats are neophobic, meaning they avoid new objects, so a fresh trap plunked in the middle of the floor often sits untouched for days. Poison sends a rat to die inside your wall, which hands you a smell problem on top of your rat problem. And none of it addresses how they got in.
What actually works is boring and thorough. A good crew, like the team at Quality Affordable Pest Control, focuses less on the rats you can see and more on the ones you can't, plus sealing the house so the next generation can't follow. Find every entry point, exclude them properly, cut off the food and harbourage, then knock down the existing population and keep monitoring.
The exclusion piece is what most people skip, and it's the whole ballgame. You can trap rats all month, but if the hole stays open, you're just running a rat buffet with extra steps.
When to Call Quality Affordable Pest Control
A single mouse in the fall is normal in this city. A rat is a different signal. Rats mean there's enough food, water, and shelter to support something bigger, and where there's one, there are almost always more.
Get a professional in if you spot any of these: droppings bigger than a grain of rice, gnaw marks on wood or wiring, greasy rub marks along baseboards, scratching inside walls at night, or fresh burrows near your foundation, garage, or shed. Those aren't early warnings. They mean rats have already moved in.
The GTA's rat problem isn't going away, not with the winters we're getting and the pace this region is building at. But your home doesn't have to become part of the statistic. If you're seeing the signs, getting a licensed team like Quality Affordable Pest Control in early is the difference between a quick fix and a months-long battle you keep losing. Deal with it while it's small. Your future self, and your walls, will thank you.
