Best stuff I have ever used.
Do you want to deter them with bags of water, or do you want to kill them?
The flies have been worse this year than I can remember in a long time. Mandi took this photo after setting out a Quickstrike in the barn early this year. The Quickstrike had only been out for one day, and it killed a pile of flies.


Quickstrike runs about $20.00 for two strips and the last quite a while. We have used Quickbait in the past, and it worked well too.