I figured I'd add that I dealt with mites after recieving 3 new snakes with mites. I had to treat my whole collection. As soon as I noticed them, I ordered the PAM. I got one can within a week, and within about another week after treatment there were no signs of mites. One can will last a while, and it's a great preventative too. If you ever add a new snake (or 15 like I did) it's great to treat the new enclosures. Good luck.