I am just starting up, and at least one -- maybe both -- of my hives have tracheal mite symptoms (walking bees and k-wings). The local mentors suggested that I use menthol on the bottom boards, which I have done. They said to put it on the bottom boards, since highs could exceed 80 degrees. I put that on last Wednesday (its Monday now) and I have noticed much fewer walking bees already. I suppose I could have Nosema, and I also treated with Fumigillin.
I can't imagine that the bees like this stuff. How long do I need to keep it on the hives?