Anyone try "Pour N Restore" cleaner yet? Pour it on, spread with a 
notched trowel to 1/8 thick, let it dry and sweep away the remains. It 
claims to suck older stains out of the concrete. The Two Guys on TV 
showed it one  day and I thought I'd give it a go. It's just too cold 
right now. It's sold at ACE Hardware stores among others. It's expensive 
at $12 for 32 oz ($40 for the gallon), but if it works that well, might 
be worth while on stubborn stains. They have a store locator on the web 
page.
http://www.pour-n-restore.com/
I report later when I try it.
Dave
Ron Soave wrote:
> --- b-evans@earthlink.net wrote:
>   
>> was not in use.  ("Sodium" or plain old table salt,
>> is quite different 
>> from "sodium metal".)
>>     
>
> Buster,
>
> My HS chem prof, Dr. Bloch taught me that table salt
> is sodium chloride, not sodium, complete with stable
> ionic bond. When I was in college, our "lab"
> experiments were done in a linear accelerator which,
> apparently, was far enough from the California
> university system to be accident free!
>
> Glow-free and intact,
> Ron
>
>
>  
> 
>____________________________________________________________________________________
> 8:00? 8:25? 8:40? Find a flick in no time 
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