The problem with leaving coolant around though, is if someones pet is out running around (I know, I know, that can be a different story), they drink it, they get poisoned too.
I won't lie, this is how I culled our raccoon problem years back when they'd climb up our Hacienda, get on that roof, then jump over to the roof of the house and be trying to get in to the roof by tearing up the flashing around the roof vents.
So I put a feeder full of coolant up on the hacienda roof where I was sure random cats/dogs weren't going but they were. Between that and my neighbor picking them off with his pellet rifle...
must have been some small raccoons if a pellet rifle could take them down.
the ones i see are bigger than small dogs. a good 30-40 lbs