Catfish Baits

I am a catfish fanatic and will try anything. I have used everything there is except for one thing. Soap. Never caught crap on liver just stinkbaits and worms and had bites on cuttbait. I found several sites selling this catfish soap made from animal fats(lye) and am thinking about trying them. Has anyone used soap baits before?

http://www.clark-baits.com/