I honestly use my temp gun for most temp checks I do have a Thermometer Hygrometer in the enclosures and I let the probe jut kinda float under the substrate I use MY IR temp gun to check all my temps and use the thermometer as just a kinda quick look and see gauge. If I see the temps are not what I want then I check with the IR temp gun and either adjust or move my probe back to where it was supposed to be. Snake love to play lets pull anything glued, taped, or velcored off so I just quite trying to keep them in one spot.