Quote Originally Posted by vivi View Post
The snake can urinate, poop or alter the placement of the probe which can lead to incorrect readings, which can lead to heat spikes and fluctuations. You do not want to be taping it down inside the enclosure either to prevent the snake from moving it, because tape should never be used inside an enclosure. You can use a temp gun to use know what temp your snake is getting, and adjust.
Sorry i forgot to include that you can still have it inside, as long as its secured. I have a suction cup and it stays on even when I pull on it. I also place mine under the hide where the heat mat is and so there is no/low chance of defecation or urination on the probe.

You can also use silicon meant for aquariums as well.