how to stop flys from coming into house. I live in a delopement near a farm. Regular size fly
Sussex County Delaware
Truly, the best way to keep out flies is to install screens that really fit well and keep them closed. The old fashioned remedy for the ones that get in is fly paper (not a pleasant sight) or a fly swatter. Farm animals do attract flies; hopefully you have a beautiful view to make up for the inconvenience.