wrote in message
ups.com...
We just moved into our house, and the basement floor has a layer of
mud/dirt on it. I pressure washed it, but it still is really dirty
looking. What can I use to clean it so I can seal it?

A solution of muratic acid and water..mop on...wait about 20 minutes and
rinse...it gets everything.But do not leave it on too long as it will start
to eat the concrete.

http://lexingtonpaint.com/howto/concrete.htm