Is there any evidence or research to suggest varroa are attracted to UV light? In my view, there is more than a whiff of snake oil about this product.
People have varying levels of credulity and cynicism. I guess I'm at the more cynical end. Whenever I see the quote "There are more things in heaven and earth than are dreamt of in your philosophy" my reaction is scepticism.
Of course science does not know everything, but it certainly does know enough to dismiss a huge amount of the mumbo jumbo that pervades modern existence. Science has observed four fundamental forces that control all known interactions in nature: gravitational, electromagnetic, strong nuclear, and weak nuclear forces. There's not even one iota of evidence to suggest any other forces exist, although if someone wants to sell you a crystal for £100 they will invoke all sorts of "energies" and "psychic vibrations".
I must stress my mind remains open to change. It just requires well conducted scientific research published in the most reputable journals and subject to vigorous scrutiny and review to change it.