The temperature is 80 degrees during the day, peaking at 90 occasionally, and it is around 70-75 at night, but he spends his time in the hide on the side with the built in under substrate heater. i have handled him many times scince and no mites have appeared on me.
"Under Substrate Heater"? Is this heater in the tank?, or is it an under tank heater? If it is in the tank under the substrate get it out. If the snake gets to it he can get burned.