I usually just take a wet mildly soapy sponge scrubber and give them a good wipe down.... but I hold it so the probe is up and the wire is trailing down. That way any water doesn't run down into the probe. Quick rinse, dry with hand towel then good to go. Haven't had issues yet.... other than that first probe I screwed up.... lol.i always get them wet but not soaking in water guess i better quit doing that if its not too late