Stain on floor around toilet
Posted by Charles on March 08, 2004 at 19:17:24:
A mysterious blueish stain has appeared on the vinyl flooring surounding a downstairs (concrete slab) toilet. There is no sign of leaking, i.e. standing water, dampness etc., just the stain. I don't use the tank cleaning cartridges that turn the water blue. Any ideas?

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