If that's the case, then cans bought out of state should be littering Michigan's landscape by the barrel full.
That's sort of the idea with a deposit *refund*, isn't it?
If it says right on the can that it is eligible for a Michigan Deposit, then there is no way to PROVE you're commiting fraud. However, if you buy a can in a no-deposit state, it will NOT say it is eligible for deposit on the can.
That is where the Seinfeld thing comes into play. The cans they get DO say they are eligible for five cents in NY, and ten cents in MI. Buy a can in IN and it says NOTHING on the can. THAT will get you busted if you get caught returning it for a deposit refund.