Short version... do shops have a big vat I can drop by and pour my used antifreeze into?
I'd just call around but it's Easter weekend and my 2 year old just asked if it was orange juice in the jug in the garage, so time to get off my ass and figure out how to get rid of it.
Most places seem to only take it in its original container, which currently is still half full of new coolant. I could be a jerk and put it in any old jug and leave it at Canadian Tire after hours, but my conscience is suggesting I try to do it right first.
So much easer when I had the old car that just leaked coolant all the time, constantly creating empty containers.