<b>Don't boil it!</b> If you got the one that has the no boil directions, then don't boil it. There are 2 versions- here and Europe, if I remember correctly. I don't know why, but I do know that the US distributor told me (via email) that I should have the boilable version, but they couldn't promise. When it was time to replace it, I gave it a whirl and ended up with a Salvador Dahli version of my Go. The one available overseas IS boilable. That is one of the things I am going to check into further when I get ready to order another one.
Mine also came with instructions of rinsing it, running a teaspoon (letting it neb and run it through) of hydrogen peroxide through it, and washing with gentle dishwashing liquid and letting air dry. I don't know why the directions came like that (they were the pharmacy directions, not the Aeroneb Go directions) unless it had to do with the antibiotic (I was sent mine as a nasal neb) I was using.