My kids run barefoot through our backyard with the chickens all the time. I suspect that because of our areas very high rate of precipitation most waste is broken down before it gets messy. If you don't have much rain I bet a sprinkler would work as well and serve double duty

Curious...how do you deal with the inevitable chicken waste + children running around? I would let my birds free range, except my four kiddos run all over the property and usually they are barefoot. (Nobody around here wears shoes in the summer, lol).