I’ve been soaking feed for my laying hens for several weeks now. They absolutely love it. But all of a sudden Ive started having issues with it molding and smelling horrible. I didn’t change anything with my process. I put the food in a bucket and cover it with water and loosely with a lid and soak for 24 hours. When I go to feed it in the morning, it’s covered with gray mold and smells HORRIBLE like a rotting animal. What am I doing wrong??