HI Guys, have searched the forums but cannot find an answer

I have a problem with the switches, all of them are sticky and most of the time will not work, I know Honda used to use a grease that went hard after a time but don't know if they still use the same greas? Now the question is, what is the best way to clean them, last time I tried the bits went everywhere although with a bit of patience I managed to get it all back together again (minus the damn greas) and it worked fine but I am sure not looking forward to having to do it all over again and especially with all the switches !! Any suggestions or best way to tackle the job without it driving me crazy
Oh, by the way, it's on a 2002 1800