I am having a massive fly problem. I have bought many fly paper traps and a couple waterbag traps from my local feed store but have not made a dent in the swarm. I bought a nontoxic bug spray that was made of peppermint oil, cinnimon oil, sesame oil and wintergreen oil. WHAT A WASTE OF $6.50!! Is there any other chicken safe bug killer I can use around my coop? Neighbors are totally cool about the noise and occasional smell of our chickens, but I am afraid swarms of flies might make them start to complain (rightfully) about them. I keep my coop VERY clean and have a deep litter system with about 8 inches of pine pellets and shavings mixed. Any sugestions will be appreciated.