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Leslie from Suffolk, Va writes

How long after treatment of Crystal Blue Copper Sulfate can cattle /horses drink from pond?

Answer:

It is not recommended to treat ponds with Crystal Blue Copper Sulfate where there are grazing animals drinking from the pond. If already treated, please contact the manufacturer regarding the application as it states on the label, “For applications in waters destined for use as drinking water, those waters must receive additional and separate potable water treatment.”

Answer last updated on: 08/14/2019

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