Published on April 15th, 2014 | by Henri


Bleach loses potency over time

Q.    In your advice about algae on a shingled roof, you mentioned to use fresh Clorox bleach. What do you mean by fresh Clorox bleach? Is that just newly purchased bleach, or is it a type of Clorox bleach?

A.    Sorry for the confusion. It means newly purchased Clorox bleach, as it loses potency over time once opened.

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