Sorry I guess I was not clear I do not use essential oil, It is vanilla extract and the big jugs of the potpourri liquid no EO in either. Sorry for the mix up.
Maybe that is why I didn't have as many flies last year. This yr they r terrible. I used the vanilla car fresheners, vanilla oil, potpourri liquid, and sprayed the entire coop with vanilla to keep the buffalo gnats away. guess I need to go respray to get rid of flies!!!
edited to add: I use a...