body rashes and sore throats in many of the children  who used it, resulting in several lawsuits by angry parents.  Eventually, after much experimentation, and an intensive  investigation by the FDA, it was determined that there was a  property in the mixture, of unknown origin, that caused an infection  of the hair follicles in certain individuals. The product was  recalled, but disposing of it turned out to be an even dicier  proposition. Trying to incinerate the mixture only produced a heavy,  dense black cloud around the Providence, Rhode Island, garbage dump  where the attempt was made. Working with the U.S. Coast Guard to  sink the substance at sea turned out to be a fiasco, as well, as the  next day almost all of the dumped Flubber came floating back into  Narragansett Bay. Finally, it was decided to use the mixture as  landfill, buried deep under the parking lot at Hasbros new  warehouse, just outside of Providence. Even then, the incredible but  true story doesnt end there. A popular "urban legend" among Hasbro  employees is that every year, during the hottest days of summer, you  can still spot some of the mixture oozing through the cracks in the  parking lot.