Carney announces contest to revamp uninhabitable Canadian PM residence

Various issues - including a rodent infestation and mold - have left the historic, sprawling Ottawa estate empty

10 Downing Street has two things: mice and a chief mouser. For more than a decade, an officially recognized feline has kept the residence's rodent infestation to a minimum.

Over a similar period, the official residence of Canada's prime minister has seen an unchecked explosion of rodents.