In the 1950's, Alberta, Canada, was under attack. By Rats! In response to an invasion of rats, the government of Alberta embarked on one of the most successful pest control campaigns in history.

Sources

"History of rat control in Alberta" - https://www.alberta.ca/history-of-rat-control-in-alberta

Image: Poster released by the Alberta Department of Public Health circa 1948. (A17202b/Provincial Archives of Alberta)

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