Hey Muleskinner, I looked on the regs too and didnt see anything either,,like Dudlbugr said, it is a good question for the mdwfp site, or if you are fishing at lakes , you could call the park ranger and ask him,,i have never chummed before but i have heard of people usin dog food and i see some commercial chum for sale at catfish connection,,, and i also dont use dough bait, but there are alot of different dought baits for sale too