Well.................. Here's the deal on the probes -
They contain a thermocouple, inside the probe tube, two fine wires of dissimilar metals, e.g. iron & copper, that are connected together on the end used to measure temperature. The temperature difference makes them generate a TINY electrical impulse that is fed to circuitry designed to amplify it and calculate the temperature. Gives a fast reading.
They can't be "shorted out" by touching metal, hot or cold, they are connected and, thus, are already "shorted". They are also sealed inside the probe tube.
The most common failure cause is a break in the wire lead from the probe to the plug, or a plug failure. This is usually caused by a sharp bend or kink in the lead, also a lot of bending where the wire enters the probe tube is common. Plug failure can be from bending or failure of the wire connection to the plug. Be careful how you plug it in and unplug it.
Bottom line - Take good care of your probe and it will last a long time. Don't be afraid to clean it, but don't dump the whole thing in a sink of water to do it, just follow the manufacturer's instructions.
The thermometer rarely fails.
I have had my Brookstone Grill Alert 6 years and no problem yet.
$.02.