Feedback on littering offences has increased, and rat-related problems are on the rise. Coffee shop toilets continue to rate poorly. Will plans to increase surveillance and name and shame litterbugs work? How long can Singapore rely on an army of cleaners? Steven Chia speaks to Andrew Khng, chairman of the Public Hygiene Council, Dr Serene Koh, director of The Behavioural Insights Team; and Rosie Ching, Principal Lecturer of Statistics from the Singapore Management University. See omnystudio.com/listener for privacy information.