I have shade cloth and misters in my runs. I don't run my misters too long here because stuff stays wet longer here in FL and I don't want it to get moldy. I do notice it makes a difference even with our humidity during the summer. Our spring and falls are generally dry and fall can be hot. I grew up in Phx and also lived in Lake Havasu City, AZ so I know what hot is there lol. I had my shade cloth and misters left over from when I lived in Lake Havasu that I had to use for my tropical plants there and thought they might work good for the chickens. The chickens really like when I turn the misters on, they run out and get under them and have fun playing. The shade cloth helps to keep the hawks out of the pens. We have a lot of huge hawks, eagles, owls, vultures etc here.