Hi Marie, good to see you back! Hope your winter was good!! Got your pm on this and the MSDS's don't lie, that magnet is just bleach, I suppose that BIO-Guard thinks it's better to have the metals stain the walls, etc rather than be in suspension

I have all the faith in the world that you will be able to help PH101, but if I can help in any way, I'll keep my eye on this thread