Invasion of flies......HELP

[JustAChickenLittle&More]

Where is the cheapest place to get the de?

 

[limited25]

Can get a hanging fly (bag) trap at Lumber 2 ... think it is for horses, but it works great. After a while it can start to smell but we leave it hanging outside the run in the summer because it really traps them. We probably use 2 per year.