Quarantine

Basically everything as mentioned above plus if another snake comes into the QT room (which is a corner of our master bedroom on another floor of the house), then the QT "clock" restarts for any snake already in that room. Also no matter how long they are in QT they don't leave there until they are a certain weight or gaining in an expected manner, feeding strongly, shedding nicely, etc. Only ball pythons in QT are kept upstairs, boa's and the milksnake are kept in other areas of the house seperate from the QT room and the ball python's room.

I keep my new arrivals in a room at the opposite end of the house as my rack and established snakes. They get handled and cleaned last if I am making rounds and cleaning everyone's tubs. Of course, they get treated with PAM right off the bat.. I do not take anyone's word that a snake is mite-free, because everyone could make a mistake and by the time I saw a mite, it could be too late and they could have hitchhiked into my collection! I actually plan on treating all of my snakes if I ever get a new one, just to be safe; it is harmless to treat and takes a few minutes of my time, so why not?
These days I would recommend a fecal done by a vet, what with people selling snakes that have internal parasites.. :(

So I could just take 1 of the tubs out of the rack (its never been used), keep the QT snake in that with some form of heating element in a seperate room for up to 90 days. Now I just need to figure out how Im going to keep her warm.