PSI began working in Cambodia in 1993 and has successfully social marketed a number of health products over the past 14 years. PSI/Cambodia and the MOH jointly decided to address the gaps in appropriate diarrhea treatment by launching a diarrhea treatment kit (DTK), a prepackaged product consisting of two sachets of low-osmolarity ORS and 10 tablets of zinc sulfate. PSI received funding from USAID and support PSI/Cambodia selected Siem Reap and Pursat as the targeted provinces for the pilot due to their higher mortality rates for children under five (94 per 1,000 and 106 per 1,000, for Siem Reap and.