It is designed to encourage recycling, but most states that feature such programs only apply it to carbonated beverages (soda, some energy drinks, beer, wine coolers). These policies need to be updated because of the prevalence of bottled water, bottled milk, sports drinks, and juices. In fact, I'd like to see a ~$0.25+ deposit applied to non-beverage containers. THOSE are the ones that are HUGE, contain chemical residue, and seem to be recycled very infrequently (i.e. detergent, bleach, liquid soap, hair care bottles, household cleaners, etc.)