I'm sure this topic has been covered extensively on here. However my search did not return what I am looking for. I have 1 snake and she got mites recently (I have already ordered PAM). I use apsen substrate and feed live. Could mites come from the substrate or from the feeders rats, since I have no other reptiles? I know with PAM the snake will be fine, I was just wondering where the little devils may have originated. TIA for any answers, this site is full of useful info and knowledgable ppl.