That is a good point, in the event of all day use, but its not really necessary, just short times during the peak heat hours. But you do make a good point about the "enveloping" of the heat due to the moisture content. As of now, I only mist my girls when they just start to show signs of heat stress, and only long enough to feel the coop temps drop. They do have huge stainless dog water dishes for pools, and I freeze water bottles during the summer to put in their waterers. Lol Im a germophobe sort of, wrong hobby for that I know so my girls only get the pools, no mud holes.