Personally, I wouldn't expect a DynaVap to be clean enough to be "good to go". I would like to see a sticker that reads along the lines of" Warning: please give your new DynaVap a thorough cleaning before using it for the first time - manufacturing residue, including cutting oil and metal dust, may be present." Of course, I wouldn't expect it to be filthy, either, but it's not a hermetically sealed medical device (even though it is often used for medicating ... huh ... maybe I gotta' rethink this!. Even without the current COVID-19 threat that makes cleaning a "disinfecting" issue, if I am going to put something into my body, I am going to take responsibility for making sure it is as clean as I want it to be. Also, I see the initial home-cleaning as a bonding exercise between me and "whatever" I'm cleaning. Even if it doesn't HAVE to be cleaned, I wanna' clean it ...It's a time to disassemble, inspect, familiarize, and then ... clean. But, I'm also a RTFM guy. After an initial thorough cleaning, I clean pretty frequently so it goes very quickly - not a big deal with a bit of iso or denatured alcohol. I have no need for an ultrasonic cleaner. But, I'm not a heavy user ... non-user currently, actually ... sigh.