I just got a Mav ET-732 and am about to test it. I was just wondering why it says not to put the thermometer in water and all the calibration tests are done by using water. I take it they just don't do well in prolonged exposure to water is this correct? And as far as cleaning it, would the best way to clean it be just get a damp paper towel and wipe it off? Is there any kind of cleaning wipes like they make for granite counter tops and stainless steel, etc that would work on the probes?