Sorry to hear of your gnat problem. I have the same problem, and I posted it a couple days ago. I have gotten a lot of good advice. We have a neighbor who had chickens killed by gnats. When he found them dead, their little noses were just plugged up. Someone suggested hummingbirds eat gnats so hang up a feeder for them. We are going to do that. Another suggestion was to hang fly paper high enough that the chicks can't get to them. I also read somewhere else to put out a pan of milk. The gnats will go for it, and your chicks will eat them and drink the milk. Can't hurt to try. We use vanilla spray for ourselves, so today I got 2 car fresheners, vanilla scent, and hung high in the coop. By afternoon, there were hardly any in there! I hope this info helps you.