I have heard that aswell, but i havr a friend who is a marine biologist and he said that is a wifes tale, they have actually studied it, and it did not hurt fish, the reason it was banned was the fisheries started stinking and smelling like brewerys from all the firmented corn from people chumming in shallow water, thats why it has been banned in alot of places, which is funny cause i have ran in to stinky old worm containers more than stinky corn....but thanks for the warning its legal in michigan....thanks MIckey