I wash everything, every night, every day.
Why? Because if your breath/spit can get into a drip tip, then condensation can get into your clearo....that is entry for bacteria, plain and simple, and that will go into your lung tissue.
That's just me.
Esp. important for those who use bottom feeders~ Try dropping a drop of water into drip tip...it WILL go down into the atty connection, and then, can go down into your chamber, tube or juice bottle. At the very least, it will go into your attie.
No way do I want to vape "spit" even from my own mouth while it sat overnight in my drip tip, atty, atty chamber, etc.
I clean my drip tips 3-5 times a day (rinse in sink). My mouth goes on there all day long.
I have been pretty amazed, since I began vaping, at the negative hygeine things that can happen, whereas with cigarettes, you took one out of the package, smoked it, and discarded. Vaping is more like smoking that same cigarette, over and over again (in terms of hygiene) while it is exposed to all kinds of environments, and the bacteria in your mouth (natural, or from food, or meal, or even drinking something).
ewwwww.
I read about people leaving juice in for 2 weeks and I just .......curl up.