I just wanted to add that I know how frustrating Myco can be, and in most cases a flare-up doesn't require a vet visit. Myco is caused by spores, which are nigh impossible to kill and impossible to eradicate completely.

I had a parrotlet housed in the same room with a pair of rats and a bunch of reptiles and he thrived. The snakes, however, were forever eyeballing the rats.