Are contact treatments worth the money?


I have been reading some of the claims regarding the benefits of applying contact paste, liquids, etc. to all my connections. It sounds appealing but would like to know your experience with such products. Prices range from $35 to hundreds.
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Gregm, can you provide a link or two to sources for industrial conductive grease?

Thanks.
I found a few sources for electrical grease. McMaster.com is one.

However, I have not found a source for electrical grease that contains silver particles like Walker or Quicksilver.
Dear Rodman,
Thank you for supporting my 1st Amendment rights (honestly). I apologize for the acerbic nature and tone of my statements; I categorize contact enhancers along with other products that are heavily marketed on a pseudo-scientific basis. I worked in audio and know how hard accessory sales are pushed. The mark-up is tremendous. So, I am very cynical and skeptical of accessories.

I was going to go on with my arguments against contact enhancing accessories, but decided against it -- you are correct, I do not hear the difference. And, you are also wrong, I have tried contact enhancers. My money will never go towards them. My connectors are good quality and I keep them clean. I will, however, buy tuner cleaner, or whatever some may call it, for cleaning the pots on my pre-amps.

Cheers.
I'm a skeptic by nature and as a result of being screwed over the years, by hyped products outside of the audio arena. However- When an audio product is offered with a money back, satisfaction guarantee(ala SST), highly touted by so many reviewers(professional and otherwise), and conforms to my knowledge of physics: I'm compelled to try it. BUT HEY- As long as we are enjoying our systems: It's all good, right? Happy listening!! =8^)