It’s old news that Singaporeans aren’t too big on cleaning up after ourselves: while we enjoy the reputation of being clean and green, it’s no secret that we also require a veritable army of cleaners to maintain our landscape. As we mentioned in a previous article, our population-to-cleaner ratio has gotten so out of hand that it prompted Public Hygiene Council chairman Liak Teng Lit to say, “Singapore, we have five million people and 70,000 cleaners. That’s two Singapore armies. It’s quite ridiculous.