I found this thread interesting and thought I would add this anecdote. I ran into an acquaintance one time who was in the middle of slaughtering some steers. He is a full time cattleman, not just a back yard farmer. I was interested to ask him what they did with the offal and he told me they composted it right there. There was no smell at all and he told me it was excellent fertilizer for his fields. I asked him about the smell, and he told me they turned it often with a tractor and added other organics to the (giant) pile when it was convenient. They apparently didn't have a problem with smell or pests, which really surprised me. I guess if you really know what you're doing, you can break all the rules!
