I did a science fair project once in elementary school. My project was to see what materials would break down styrofoam. I took a big chunk and broke it into pieces, leaving each in a jar of different liquid (and burning one). As one would expect, burning it worked really well, but of course let off a ton of black smoke.
But you know what else fully dissolved the styrofoam? Coke. One week in a jar of coke and it was gone.
But you know what else fully dissolved the styrofoam? Coke. One week in a jar of coke and it was gone.