So I've just read this post and comments, as well as the other boiling nebs topic, and you've all just given me a huge wake-up call. I rinse my nebs out once a day!! As in, NOT after every treatment. I've boiled them, I think once or twice since I've had them..TERRIBLE. I DO rinse them in a vinegar solution, which I was told should happen at least once a week, but I do it probably once a month, IF that.
So I have been completely ignorant on this topic and can't believe the importance of sterilization has never been stressed (or even explained) at any of my clinic visits. I guess they think it's just a given; that we all know or should know. This just shows how valuable a forum like this can be. Thank you all so much for this info. I'm making BIG changes, starting tonight!!