This year we've had a lot of flies in our yard, and since we got the chickens it has intensified beyond belief. There are seriously swarms of flies out there, and I have been raking their poop and sprinkling Stall Dry all over the place. I also have up fly tape in several places, which is helping a little but not putting a dent in the population. I'm so sick of the nasty flies! I'm going to look for cintronella oil and try that mix...