Citralic vs. Oxalic for Rust stain removal

[John T 744]

I have to clean a cement style building next Month that is covered with Mold. Thats the easy part to clean but in some spots on this bldg there is rust stains which when I did a sample the Citralic brightner that Beth sells here did a decent job in removing these stains.

I like using Citralic because it is relatively safe but does Citralic clean out rust better then or at least as good as Oxalic brightner would??

Thanks

[Firedkm 14]

John,

That will work for you but it will take longer than using just straight oxalic acid. The citralic is a slower working brightner so the dwell time will need to be longer.

Good luck