Answer: I am not sure exactly what specific kind of flies you are having trouble with so it is difficult to make any suggestions. I found an excellent information sheet on nuisance flies from the University of Maine Cooperative Extension Pest Management Lab at
and maybe it will be helpful to you. If not, their contact information including an 800 number is at the top of that page. I would suggest you call them for their suggestions as to how best to handle the problem. If some sort of chemical control is recommended, they will have the most up to date information on what to use and how and when best to use it for maximum effectiveness. Good luck!
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