understood, I was just trying to say that without a culture what ever drug you start with, is just a shot in the dark. I've tried fortaz and so far had no success with it by itself. do I think it's a bad choice by itself. no, it's just what ever my snake had wasn't sensitive to it. I had great luck with baytril, did you get my P.M. ? this will answer a lot of your questions for R.I.s. let me know if you were able to get the link to work. don