I'll buy this tomorrow for the coop run. ThanksI buy a Captivator fly trap. Things stinks, so don't use it in your house
http://www.tractorsupply.com/en/store/starbarreg;-captivatorreg;-fly-trap?cm_vc=-10005
I'm using deep litter or what I think is deep litter, I use pine shavings and DE and just add DE and the shavings occasionally and the flies are the big ones. I'm seeing at least 3 in the house daily and there is more around the coop. I was using FF but when I travelled a week ago for 5days I left them with regular feed, I'm now back to FF so I hope the combination of FF,DL,DE and the stinky stuff Tomtommom suggested will get rid of all of them.I haven't seen a fly in my coop for 3 years now, truly! Mom is amazed. Deep litter and the FF are the combination that yielded that result and I'll never go back to stinky, fly ridden coops again. Even the poop in the yard attracts no flies unless it's cecal poops, then it only attracts the big, green blowflies.
If not wanting to try the FF and deep litter, I've seen vanilla car deodorizers (the little trees) work wonders in the house, the car and in the coop. When I tried them I was living in the middle of fly central as the farmers all around me would spread chicken and turkey litter all over their fields and then all the maggots in it would hatch....and guess who got all the flies are their place? Thousands and thousands of flies. The vanilla trees seem to ward them off the porch, out of my truck(imagine trying to drive while hundreds of flies buzz around in your truck and will not leave even when the windows are left down), out of my house and out of the coop.
Thanks