@cochins1088 , I think you"re doing things in the right order... rule out environmental, then decide to give antibiotics or not. Once that is ruled out, the antibiotic I would use it Baytril. You have 22.7mg tabs, so you could take 1/4 tab (5.76mg), add some amount of water or compounding syrup and dose by weight. If you have a small animal vet that you normally see, call them and ask if they'll sell you some compounding syrup The Baytril dose I would use is 10mg/kg (1mg per 100 grams) twice a day, which means you would have to weigh them on a kitchen scale and do a little math. Let me know if you need help with this.
Example: Crush 1/4 tab and to measuring container. Fill container to 10 ml mark. Now you have 10 ml of Baytril liquid that has 0.576mg Baytril per one ml. Make sense?
-Kathy