Clean Yellow Lead-Acid Battery Stain From White Cockpit Sole - How?

[Harold]

I just had my lead acid batteries replaced with AGM's. The workmen must have tracked the residue of the acid gunk from the lazarette onto the cockpit sole. Now there are yellow stains on the white sole that aren't responding to the cleaners I have tried.

Any suggestions on what will remove the yellow stains?

Thanks, Harold