It is just mice.
They are not going to drag you into their den and have you for dinner.
If it was a Black Bear or Skunk I could see you being concerned but it is a mouse.
Plenty of room for both of you.
I don't see what the problem is.

I guess you're not concerned with what tourists may think of our city if they see mice at Union Station, a major transportation hub of the city....

With mice at track level and running along the platform, it is possible they could enter a subway car and and freak someone out...
a) Maybe someone onboard gets bitten and contracts a disease carried by the mouse?
b) Maybe someone cautiously presses the emergency alarm upon hearing someone reacting to or being bitten by a mouse? The whole subway line "could" needlessly slow down or come to a stop until the investigation is completed.
c) Maybe the mouse gets into someone's bag on the floor and that person ends up with an infestation in their home...

Some people are scared of birds maybe we should rid the city of birds?

c) Maybe the mouse gets into someone's bag on the floor and that person ends up with an infestation in their home...

What? That was a ridiculous possibility. Mouse and rats live outside, and unfortunately sometimes, in the subway stations.

I don't understand some of the criticism? Are we saying that it is okay for tourists and the people of Toronto to put up with mice running throughout the subway system? Is that the type of city we've become?

We are a City that loves our wild life.

there will always be mice in the subway even if the ttc cleans all the tunnels and stations there are already mice there and its probably hsard to get rid of 20000 mice and even if they did get rid of them all people would still throw garbage in the tracks and the mice will come back

i meant hard, not hsard