The main reason behind this ban is to maintain the cleanliness and order of the city. Chewing gum, if not properly disposed of, can cause a variety of problems. It can stick to pavements, public facilities, and even get stuck in subway doors and sensors, which once led to malfunctions in the subway system. As a result, the sale of chewing gum, with the exception of certain medicinal sugar - free gums available by prescription at pharmacies, is completely restricted.
For tourists coming to Singapore, it's crucial to note that bringing chewing gum into the country is also not allowed. Violators may face hefty fines. So, if you're planning a trip to Singapore, make sure to leave your chewing gum at home to avoid any legal troubles. This unique regulation is just one aspect of Singapore's commitment to keeping its environment clean and functioning smoothly.