You can try whichever prey you would like. Make sure you are checking the temp under the substrate on top of the glass over the uth and if it is above 94 unplug it until you have the thermostat, snakes will burrow and get burned. What uth are you using? In my years of keeping herps I have never gotten one that has only went up to 90. It may get only 90 on top of the substrate but you have to be concerned about the temp under the substrate.

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