Engineer Benedict Jebakumar has picked 37 kg of nails from roads

> Nearly every day, Benigno bikes about 10 miles and picks up around six pounds of debris — about the max the magnets can carry. Over the course of eight weeks, he collected over 410 pounds of metal

However, that's general metal. The India Times article is specifically nails, and with the observation "all the nails were of the same type and were found at spots close to puncture shops".

Do bike shops in Boston do that too?