The province’s Rat Control Program has helped make it one of the few rat-free zones in the world

Alberta is marking 75 years of rat-free status.

An aggressive control program had made it the largest inhabited area in the world that is free of true rats.

There is no resident population of rats, and the rodents are not allowed to establish themselves.

It does not mean Alberta never get rats. Small infestations occasionally do occur, but when found, the animals are isolated and eradicated.

"Alberta has proudly been one of the few jurisdictions on Earth to live without the pest," Alberta agriculture minister RJ Sigurdson said in a news release.

"We have a zero-tolerance policy for rats. If we spot an infestation, we quickly eradicate it. As a result, we’ve prevented millions of dollars i

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