So if you look up the Brown Rat, you can find maps of where it’s found. Turns out, Alberta doesn’t like rats. The first rat showed up in 1950. The following year we made a RAT PATROL and didn’t just shoot and poison rats on sight, but BLEW UP BUILDINGS where rats were found.
And now we don’t have rats.
The Voles are enough, thank you. They’re cute, but man do they multiply.