Thanks for all the info. I got some of these comming in a week. Sounds like there's a fair amount of maintenance on them though...
Not really. I mean if you want you can just use them and then
throw the heads out when they get gross.
However since they are out of stock everywhere I'm saving them all like they are precious gold >.>
It's pretty simple to clean them, just take the parts apart, rinse in water, dry
Dry burn and then refill w/ liquid