The NCC took something out of Confederation Park.
No, it's not about the rat poison they took out, after putting it there to try to get rid of unwanted guests.
It's the shrubs they took out of the park in November 2008 to get rid of unwanted guests. Only there was no mention of rats at the time; they didn't like people sleeping in the park and leaving litter and clutter.
In that article, a man who used to sleep in the park said the park was kept clean by the homeless people who slept there. It sure makes sense--if you sleep someplace, you keep it clean. He says any litter was left by the people who pass through there.
Since the NCC didn't say anything about rats when they removed the bushes, I can only assume the rats arrived after they removed the shrubs--and the homeless residents. Maybe the homeless people were no longer there to keep it clean.
I can only wonder if the NCC brought about the rat infestation themselves by removing the shrubs that gave it housekeepers.