My ball not using his hide?

[MammothTarantula]

You say you have triple checked the heat (among other things); may I ask what it is, and how you regulate it? How are you measuring also?

Have there been any sudden changes to your household or The Snake's environment? Is it near a window?

I've got the cool side at 80-82 degrees F using a generic made in China thermostat (all I can really afford) and the warm side at 90 F with a heat lamp coupled with my apartment's thermostat working in conjunction. I have two ZooMed digital thermometers to measure the temp.

I recently changed his substrate from ReptiCarpet (or whatever it's called) to EcoEarth, but that was almost a month ago and he's eaten since that substrate change, so I'm not sure if that's it