red clay on concrete

[RICHARD A.]

I know I have ask this before but have misplace the info everyone gave me,sorry! Can everyone please update me on how to remove red clay stains. the concrete is brush and smooth finish and no color.Also need some info on oxalic acid and how too use it. thanks Richard

 

[oneness]

Richard:

Here is a link to your original post, and ronp's reply.

http://www.propowerwash.com/board/upload/showthread.php?s=&threadid=3500