cable connector cleaner/contact enhancer

Thanks all for weighing in.  It seems that most of your comments are in favor of cleaning contacts as opposed to conditioning.  I think that is the best way to go.  The less product between connectors the better.

Kontak and Stailant 22.

Be advised the cleaning of all outlets in the abode is important, even the non audio ones. They all feed back into the audio system. Dirty or oxidized surfaces can produces micro arcing that generates noise.

Geoff,

I haven't gone to the length of cleaning all the outlets in the house, but I did get a nice improvement with just the outlets on the same breaker circuit as the audio system.  Rather than cleaning them though, I replaced the non-system outlets with spec-grade outlets, and the difference was quite noticeable.  Not sure if it was due to dirt/oxidation, or due to the crappy contractor-grade outlets with the Romex shoved into the spring clip terminals in the back.  I stripped down to fresh Romex and tightly wrapped the wire around the screw terminals of the new outlets as it SHOULD be done.  I attributed the improvement to the fresh copper and proper mechanical fastening, but dirt and resultant arcing certainly could have been a factor as well.  Took a little time, but didn't cost much and the result was well worth it.

I use Deoxit G5 and D5 also. I recently tried Oyaide cleaning sticks. Incredible the dirt they can collect on connections you thought were "clean".
Their size allow them to clean the inside of IEC. After that I finish with Deoxit.
I heard Acoustic Revive build a contact cleaner (or  contact enhancer ?) that is awfully expensive. Does someone tried it ?