a common example of the deposit refund system is the one used for beverage containers in u.s.a. the refund provides the consumer with the incentive to seek proper disposal of containers--bottles and/or cans. Since 1971, most states in the u.s.a. have at least considered some form of a deposit refund bill on bottles and cans, while nine states have succeeded in enacting such a bill. There have also been efforts to establish a nationwide program requiring mandatory deposits.