Okay, I've never done a coolant flush, but figure it's about time to do so... So where do I dispose the coolant? I've only had small leaks before, so I put down some cat litter and swept it up after I was done, no harm. But I probably can't do that with the whole system draining, huh? And I'm assuming if I tried to kill the rats in the sewers, PETA would throw a fit... So do I drain into a bucket and take it to autozone? Or what?