He'll change his tune if you let him know fermenting feed reduces all sorts of bills --- feed bill, medical bill, and the miscellaneous other costs incurred in trying to keep an environment healthy and smelling nice when the animals living in it are stinking it out with their poor health.
Seriously, it's a huge saving in many ways, not just immediate feed costs and deodorizing costs but also in future health problems one can avoid by giving them a leg up so to speak in terms of everyday health.
Best wishes.
