I have 2 grands at the moment. The first was bought in Feb 2014 and the other was from a trade in Nov 2015 and neither has had an actual bath to this day. They have been wiped out a couple times and blown out with the nozzle from the air compressor, but thats it. I think the biggest reason for not bathing them is I am very OCD about them when they get a little dirty and clean them on the spot. I will also clean the insides when filling the
juice bottle also. I recently changed all my contacts in both to solid silver and haven't put any De-Ox-It at all on them. Haven't needed to as yet.