Quote:
Originally Posted by ADY
muriatic acid is your best bet... had the same thing happen when the painter didn't put down drop-cloths when staining my second story deck.
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Yes, but be careful! He needs to fully flush the Bleach he put down already - Mixing bleach, or sodium hypochlorite with muriatic acid will liberate chlorine gas, which is definitely toxic, and a severe irritant to eyes and nasal passages and the lungs even in small amounts. ... The acid is strong if breathed in but is deadly if mixed with chlorine.