New construction hog confinements aren't bad, actually, I like em. They are out in the middle of nowhere, quiet, and plenty of different parts of the project to do. If you are decent understanding controls, have the manpower, and can work many hours, have at it.
Service calls, and working in running hog confinements in general isn't all that bad, you just need some time to get used to it. After a while, the smell is ignored (not for your family, however, they will always smell it on you, your clothes, your truck, your tools, and every time you cook a porkchop, the smell comes back a little).
Disease control is a BIG deal. You shower to get into the running buildings, wear there clothes and boots, disinfect your tools, and then do the same on the way out.
All in all, not a bad deal and everybody can make good money. Don't bite your fingernails.....
From Iowa, the pig capital of the world.