Hasbro introduced a toy in 1962 called “Flubber” (tied to the movie Son of Flubber). It was made from synthetic rubber and mineral oil. Unfortunately, it made people sick. In 1963 it was recalled when more than 1,600 people developed sore throats, rashes and other reactions from contact with the stuff.

What do you do with tons of toxic toys? According to the 1998 book Toy Wars, attempts to bury the mess at sea wouldn’t work because of Flubber’s buoyancy. Attempts to burn it only resulted in toxic black smoke.

According to Toy Wars, then-Hasbro CEO Alfred Verrecchia said that the unwanted inventory was buried under a building on Delta Drive in Pawtucket, Rhode Island. Residents maintain that on hot summer days Flubber continues to ooze through the cracks in the pavement.

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