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Lou writes,

I have Tru Green coming to spray Merit on my trees. I have a koi pond. Is Merit harmful to my fish?


Yes, Merit like most other insecticides is dangerous for fish. According to the Merit product label:" Do not apply directly to water, to areas where surface water is present or to intertidal areas below the mean high water mark. Do not contaminate water when disposing of equipment washwaters."


Answer last updated on: 05/17/2010

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