One of my DTs has had a runny nose for a while. He did a round of Baytril and didn't get better, so I had him tested. It turned out he had psuedomonas auriginosis (not sure if that's spelled right.) The vet prescribed ciprofloxacin which he has been on for at least 2 weeks with no improvement. Now another one of my DTs has a runny nose (they have been quarantined.) I started her on cipro as well, but still runny. What is my next step? Another round of Baytril? Doxycicline?