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Mon, 27 Apr 2020 21:00:27 -0400 |
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Hi there
It does not look good for salvaging your equipment. I read:
> We conducted a field study by placing concrete blocks in real environment, treating the surfaces with fipronil, and analyzing surface runoff after simulated or natural precipitation. The results showed during repeated precipitations fipronil residue could remain on the concrete for up to 3 months, and fipronil could still be detected in natural rainfall-induced runoff even 7 months after fipronil treatment. *
I would not be comfortable using wax that had probably absorbed fipronil, so the combs & frames would be a total loss. You may be able to salvage the boxes by pressure washing them and repainting. Whether that's cost effective is up to you.
Peter L Borst
* Jiang, Weiying, Jay Gan, and Michael Rust. "Runoff of phenylpyrazole insecticide fipronil from concrete surfaces." Describing the Behavior and Effects of Pesticides in Urban and Agricultural Settings. American Chemical Society, 2014. 1-12.
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