I'm currently taking care of 20-30 whites tree frogs at an animal shelter. All but 5 have a significant amount of nose rub and I need an efficient way of treating them. Here are our options so far:

Silver Sulfadine - I forget the concentration, but it's a typical concentration for this medicine... 1% maybe?
Betadine - diluted down and dabbed on snout
Baytril - diluted down and applied to the skin - suggested by someone at the shelter

What do you guys suggest?

From what I know, silver sulfadine will be a great treatment, but I can't find much on the topic. My local zoo has some type of central/south american frogs that are rather rare and constantly damage their snouts. They apply silver sulfadine and swear by it, but I don't know how often it is supposed to be applied.

If anyone has some suggestions, I'd appreciate it. We currently have them in a cage 4-6x larger than the one they arrived in, so hopefully things are getting better already. I'm more of a reptile guy. My amphib experience is limited.