What can I spray that is safe to use with chickens and ducks? I always treat my yard and the perimeter for fleas/ticks and etc but this year I avoided the ducks yard and the chickens b/c my stuff wasn't safe. There's no smell from them but I have flies like crazy, mosqitos(sp?), and something is eating my hosta, hydrangeas, cinnamon ferns and roses. The hostas/ferns/etc aren't the in ducks yard but uphill from them. And the roses are outside the pickett fence around the ducks.