I lubricate/clean my button with small blast from a can of WD40 or Remington gun oil. But there are electrical greases available for this purpose. Lots of Aluminum mod owners use Noalox. Sorry don't have a brand name for use with Brass, stainless and copper. But you will find it in the electrical section of you big box hardware. When out and about I carry the mod in a belt-clip flashlight holster or in a pocket.