other what already said, pay attention on what you are dressing while doing services (electronics services i mean:-))
On a side note, consider that if you are working in a known/safe enviroment (like your own bench) is a matter while if you are out for servicing fe a server or such, in an unknown enviroment (at least for you) is all another matter (above all the gears you working on, are not yours) :-)
