How to rid a building of House-Flies in Devon.

Fleabane - Derek Harper [CC-BY-SA-2.0 (www.creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons)

"Gather and dry as much of the herb Fleabane as you can find. Each morning during the months of June, July and August, burn a handful of the herb in the rooms. The smoke will drive the flies from the house."

Hewett 1900