Whats taking off in Hawaii lately are Korean Natural Farming Piggeries. Its odorless and there are no flies. Mike Dupont is teaching everyone how to do it. I found out that a nearby farm had pigs because I started hearing the squealing in the mornings and the afternoons during feeding time. As time went on it became louder and louder. I found out recently that they are doing the Korean Natural Farming method and have over 200 pigs. Although I can hear them pretty loud I've yet to catch a whiff of poop in the air. Korean Natural Farming Piggery. Google it or something.