When I clean a mess of fish I keep and freeze the guts and heads to use for kitty bait. The fish heads work great for blues and channels. I only keep the guts from good sized fish like bass, trout, and eater sized cats. It has been my experience that fish guts work a lot better for channels then chicken liver. If you feel the guts there will be a hard knot (not sure what its called). If you run your hook threw that knot the guts stay on the hook really well.