Last check up on the girls last night found them shaking their heads in spasms, scratching at their heads and BA-GAWKING in an alarming manner. GNATS! I ran in the house and got my husband so he could hold the door to the coop shut, (don't have a latch on the inside) and looked for something to treat them with. I used a spray bottle of CedarCide www.CedarCide.com aaaannndddddd.......they HATED IT!! There was a whole lot of squawking and ba-gawking going on as I caught and sprayed each girl. I also hung 4 new vanilla scented Christmas tree auto fresheners in the coop. It seemed to help. I kept running out to the coop to check on them as I cooked supper. At dark, I went back out there and held the spray bottle over their heads and sprayed them on their roost. THAT was a lot easier This morning they were OK, just now I went back out to check on them and they were fighting GNATS again, although not as bad as last night. I use the CedarCide on my horses, but not so sure about the chickens and I sure don't want to "treat" them to death. So I realized I have a big bottle of Mexican vanilla. I dropped a spray nozzle in the bottle and saturated the girls with vanilla. They smell really good now! At least it chased the gnats away. I thought about treating the ground in the coop, but the lime I bought for the compost pile is hydrated and I think that burns animals feet, but I have pickling lime, so I sprinkled some of that on the dirt floor of the coop. The coop has lots of hardware cloth for ventilation and there is now a strong breeze blowing, which also seems to help. I have to go meet a guy that is going to build our cross fence on some land we have and I'll be gone the rest of the day. I'm hoping the gnats will stay away while I am gone. Does anyone have any other ideas on how to combat these pests? I will be back on here this evening to see if anyone has better ideas. Please comment on what you know will help. I have a friend that lost over 50 buff orpingtons to gnats while she was at work. I think my 8 girls are OK for now, but I will certainly welcome any ideas anyone has, Please!!