"I've seen them just dumping the strings, usually when they stop to replace them on the machines. I guess that's the convenient thing to do, so it seems like there's no real convenient space for them to keep or store them," said Ms Loke, 24.
To see how easy it was to find these strings, The Straits Times visited the area around Toa Payoh Hub and collected 13 of them in one hour.
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