Every time I think Zero is doing well he gets ill, here we go again with antibiotics for Bacterial Enteritis. His fecal had two strains of bacteria present, one that required being sent to the lab to identify for $130! I just couldn't swing another $400 vet bill. The only thing that has changed in the last two days is I bought a new bag of hay. I kept a sample and the lot number to send back to Oxbow, I am so not a happy customer right now.