Cleaning silver faceplates?


I did a search on this subject, but didnt' find anything. Around the on/off buttons on my silver equipment (mainly my Classe amps), a "brownish" residue has built up over time, most likely smudges of dirt/oil from my fingertips. Can someone recommend a cleaning solution and/or method for this? BTW, I'm asking here first before even trying something as simple as water and elbow grease. Thanks.

Andy
ajm29
I have this same problem on my EAD powermaster. I have used plain water and windex but they both just leave smudges. Theres like a slight haze on the plate under certain views.

I am afraid to use anything on Ead's unique face such as chemicals