The crap is LETHAL !!!!! As Don said, absolutely no good reason for using it other then some ridiculous macho thing...... Melting it for purity will waste more money on propane then you should have spent on a good filler, and melting it outside not only endangers you but anyone else who breathes the air in the vicinity...... Melt it indoors and it becomes a part of your indoor environment forever. Why make your home a toxic dump????