Hello, Ive been having a problem with getting flys away from my dogs. I built a kennel with concrete floor for the dogs and pick up their waste daily, and hose it down. But I just can seem to get rid of the flys. Also notice flys around their food when i feed them. I already sprayed the yard with some spray i got at the local pet supply store for bugs and stuff. Theres not as many flys now but now I need to do something about their food. Any suggestions on sprays or powders for the yard and or something to put in their food that will make the flys stay away will be very helpful. thanx.