On the product label it states: “This product is corrosive. Do not allow product to contact metal surfaces.” Are the strips safe to use with metal queen excluders?

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Formic Acid vapours are corrosive to ferrous metals, but not to aluminum or most stainless steels. Some queen excluders get a white powder on them and will show rust around the edges over time. Plastic excluders are not affected.

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Posted on

June 23, 2021