The vet I am working with now has done cultures on them and the results are the same. I told him that the original vet prescribed Baytril and he kind of laughed and said the essentially the same thing: too many vets prescribe it but it is handy to have on hand so I've now got a nice supply in my "snake first aid kit" aka a large sealed and light proof container in my upstairs closet. It's funny: I always joke about how my cats eat better than I do, and now my snakes have better medicine than me!