Cleaning Copper Contacts?

[woodelf]

Dwight K. Elvey wrote:

>Hi
> I will repeat again. Coat with DC#4.
> I'm beginning to sound like a broken record. It works
>with tinplate over copper. It even works with bare copper.
>As long as the surface is cleaned first of salts and such,
>it will protect for years.
>Dwight
>
>  
>
I  guess we need a 'how to clean'  faq here too.
All I know is NOT to throw the PCB in the dishwasher. :)