dog food works well also for chummin...use the cheapest stuff you can find...punch holes in can, put it in an old onion bag tie a string to it and toss it in...it like cat food will bring everything right to you...eels, turtles and cats...then use a good quality stink bait and you will only hook up on channels. That is the prime reason I only use stink bait....well at least the brand I use ONLY catches channels...no more turtles, eels or bullheads....
Regular flavor early in the season and blood once it getts warm.....some advice on the stink...DO NOT, I repeat DO NOT get it on your foam grip of your rod or in your car unless you plan on scrapping your car...bring paper towels with you and a small garbage bag. Oh and hold on to your rod tight....