I was a kid in Oregon in the early 70's when they implemented a bottle deposit. It was $.05 then which would be $.30 today. To bad they haven't increased the deposit amount.

You also could return older, non-deposit containers at the beginning. This spurred me and my friends to clean every roadside and field within reach of our bikes. For a month we made more money than we had known in our entire lives. Then it was over and a valuable lesson was learned.