Polyface literally backed into the pig business many years ago as a way to build compost. When we feed hay to the cows, they eat and lounge in a pole shed that we bed down with wood chips, sawdust, and old hay to absorb the excrement. This bedding ferments in the anaerobic conditions created by the heavy cows walking on it. Added corn ferments and offers a tasty salary for pigs to aerate the bedding–hence PIGAERATOR. The oxygenation turns the entire deep bedding into a compost pile, which is the backbone of the farm’s fertility program. During the summer and fall, the pigs are in special savannah pastures rotated every few days with electric fence.