Why has Irish Rail had to warn people not to rummage through bins looking for discarded bottles and cans?

Irish Rail has had to put up warning signs ­telling people not to rummage in station bins for bottles and cans worth money under the Deposit Return Scheme.  

Is this a sign that people are buying into the new system?  Broadcaster and Columnist, Wendy Grace and David Hall  CEO of iCare Housing and CEO of Lifeline Serivces spoke to Kieran about what they thought.