OK, the title says it all. In my two car garage I have my work bench tool boxes vise, and other assorted items. Now with winter in full bloom I have used my 'Mr Heater" propane heater connected to a 25 lb tank.It will warm the garage to a comfortable temperature in about an hour.Now after about 90 minutes I notice all my tools are beginning to sweat. The wrenches I'm not worried about, however all my cordless tools has me a bit concerned.They have circuit boards that should remain dry.Is this because of the propane that I use for my heater, or simply from a change of temperature?BTW,if anyone wants to know I have 9 cordless power tools.My propane heated is much faster than say an electric space heater, and a lot less expensive.Anyway, should I worry about the "perspiration" my tools emit?Thanks, Ken