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Pam from Richmond, Va writes

Is Crystal Blue Copper Sulfate safe and effective if dissolved in warm water and sprayed on a deck to kill algae?

Answer:

Crystal Blue Copper Sulfate is applied to bodies of water only and cannot be used on a deck.  30 Seconds Cleaner is an option that could be used.

Answer last updated on: 10/01/2018

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Crystal Blue Copper Sulfate

Crystal Blue Copper Sulfate

5 out of 5 stars

$36.79

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