How is the rest of your enclosure set up? Mine is taped with a thin piece of foil tape to an area of the heat tape to the side of the tubs. The probe is not confined by the tub nor the tape, instead it is held loosely against an exposed portion of the heat strip.

Also, in this hobby 'probing' is the act if inserting a small metal probe into the vent area of an animal to check for the presence of hemipenes and determine whether the animal is male or female, so you might get some confusion on that.

Hope this helps