I've gone back through my cleaning and care logs. It seems to have appeared quickly. I got a giant bag of forest floor from a pet shop, and the tubs that got substrate from that bag had the worst infestations. The others had maybe one or two mites. I'm going to contact the pet store tomorrow and give them a heads up.

A few questions. How often do I treat and how long do I continue the treatment? I've got some PAM on the way, right now I just used reptile spray. Could I use super hot steam in the hard to reach corners of the rack?