So we are on a 4 1/2 care property with chickens and horses and a small pond. I ordered this because of these annoying gnats that come up from the gravel and soil and they drive us, the dogs and horses crazy. Without the mosquito bait the gnats go to the Flowtron from and zap, their toast. Since its not mosquito season yet we put bits of burger in the bottom and it draws the flies in to. I noticed the horses stay within the 1acre perimeter of the Flowtron when resting. We have only had it up 2-3 weeks and I have noticed a HUGE drop in the gnats and flies.