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Fipronil more dangerous when UV hits it?

Discussion in 'Pesticide & Herbicide Application' started by Ijustwantausername, Jun 9, 2014.

  1. Ijustwantausername

    Ijustwantausername LawnSite Bronze Member
    Posts: 1,437

    I Was taking a con ed course for my license and the teacher said Fipronil (when exposed to sunlight) turns into a nastier form of itself. Any explanation on this?
     

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