Back in the 40's in England some of the large operations (e.g., R.O.B. Manley) made a practice of placing a small bottle of methyl salycilate (?) in each hive. It was set right on the floor, and tucked away in a rear corner. A wick of some sort came up thru the cap of the jar. It was part of the winter preparations. I'm trying to recall what this was for; evidently tracheal mites (acarine). Is this still practiced, or was it totally abandoned for some specific reason? Could it hold promise? Interested in any info, thanks.