Quote:
Originally Posted by Radio
Some sort of strong bleach solution that required a great deal of dilution.
I don't know exactly what it was.
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Probably Clorox. It works better than anything else, by killing the biofilm organisms. Gotta rinse it off well, afterwards.
Of course, any other brand of sodium hypochlorite bleach will work as well -- they're all essentially identical, so buy by price. Clorox, Purex, various house brands -- no difference. Dilute with water about 10:1 or so and it'll still be pretty strong. Add detergent, if you like, and elbow grease.
Incidentally, Wade, when I first saw your first photo I thought it was a closeup of a streetside mail box. The other pix showed me my error.