Many years ago, when I was a youngster... one of the neighbor's Grandfather showed us how to make a stink bait using rotten chicken eggs and flour. We had chickens back then and sometimes did not remember to gather all the eggs each day… I don't remember any other ingredients but do remember that we had to bury the eggs in a metal can in the ground at least two feet deep (probably to keep the smell down) for two or three weeks. I don’t remember much else about it other than it worked better than the store bought stink baits – that is if you could stand to use it!