This is a frustrating topic for me, in San Diego, CA. I once tried to take 2 buckets back to every auto store and repair place in my area. Nobody takes coolant. I have to save it up in my garage until the city does a household waste recycling event nearby (once or twice a year). What do they expect us to do with it? You can buy coolant everywhere but nobody takes it back. It is like they are asking you to dump it in the street.