Alberta has been fighting a war against rats for more than 75 years. When Norway rats reached Alberta’s eastern border in 1950 after spreading west across the Prairies, the province declared them a pest and launched an aggressive campaign to stop them from taking over.
At one point, Alberta treated 8,000 buildings on 2,700 farms with 63,600 kg of 73% arsenic trioxide tracking powder, blowing the poison underneath buildings so rats would walk through it. The chemical was eventually abandoned after livestock, poultry and pets were accidentally poisoned.
The province then built a 600-km-long Rat Control Zone along the Saskatchewan border, with inspectors checking properties and destroying infestations and rats on sight. More than 70 years later, Alberta still has no established breeding population of rats.
Rats occasionally hitchhike into the province on vehicles and shipments, but when they are found, they are isolated and eradicated. It is even illegal to own a pet rat in Alberta.
NEW: A dead rat has been found near Bowden, Alberta, triggering an investigation by the province’s Rat Patrol.
Alberta has maintained its rat-free status since 1950, and officials are now working to determine where the rat came from and whether others are present.