I've used it for years, always have it on hand and
it lasts for a long time since I use so little. I use it "as needed"
for times of stress. In order to replenish the gut's digestion if it may
take a whack for some reason. After worming, after a competition, after
traveling in the trailer. I use it for my cow and goat off and on when
stressed/milking. After sickness and especially for a week or so
during/after antibiotics. Any time anyone has loose stools. I don't
know if it really helps, but it can't hurt.