Hi Touchstone.
No, I've never heard of it, sorry. I've had excellent results from "Total Mite Kill" from Nettex https://www.nettexpoultry.com/products/mite-and-pest-control/total-mite-kill-ready-to-use-spray/ .
I was sold my first (wooden tongue & groove) coop, 2nd hand, by a local poultry...