Cities Became Rat Free

“If it weren’t for rats, I wouldn’t have had a job,” says Phil Merrill, head of the rat control programme in the Canadian province of Alberta. The rat control programme itself costs less than C$500,000 (US$372,000) annually, covering salaries for Merrill, six rat control zone officers and bait. The ARC estimated that if each farm had 20 rats and each household one rat, then the rat population of Alberta would be 2.1m.

Larry Roy, who co-wrote the ARC report, says he thinks it was “a very good, believable estimate at that time”.

Source: www.bbc.com