Preferred Contact Cleaner and Contact Enhancer for Audio?

The Gold is, not-ironically, for gold plated jacks and plugs. As Elizabeth suggested, the Gold is available in a 7.4 mL bottle with brush applicator (part no. G100L-2DB) for twenty bucks on Amazon. In that bottle is a 100% solution; the aerosol spray in a can is diluted, and messy. The red version is for non-gold surfaces.

Kontak seems fine, I can hear a slight difference after cleaning once a year.

The comment that the 'Red ' version... The RED version is CLEANER only. To be used on tarnished connections, which then should have the Gold applied.           
There is also a "Green: which is a protectant for harsh environments. Car engine compartments, underbody electrical, Industrial environment.                       
I own the Gold Green and Red, and much prefer to clean tarnish with the Scratch X

According to the Caig website, the D-Series Deoxit (red colored) is a "cleaner, rejuvenator, and protector", the G-Series (gold colored) an "enhancer, conditioner, and protector". The D provides "20% cleaning action", the G "0.5% cleaning action". The G-Series is formulated specifically for gold plated surfaces.

I will review the offerings from Caig. Thanks Elizabeth and bdp24.

As as I explained in my intro, I’m interested in those who have tried contact cleaners and contact enhancers for audio. For my system gear, both vacuum tube and transistor gear is in play, as well as cables.

If you came across something you liked or didn’t like, I would appreciate learning about all aspects. As I said, I would like to keep this as a polling place without getting tribal. Feel free to pm me if that makes you feel more comfort.