I'd like to construct a small enclosed run for out 3 chickens. They will live in a coop almost like the one pictured here. My run will attach at the end, just past where the ramp ends (in my coop there's actually a small door at the end). The run will be about 8' long by 30" wide by 3' high. Covered on all sides and top. I've priced out constructing with chicken wire and with hardware cloth. Total materials are $33 vs. $62 with the chicken wire the cheapest. We are trying to do this on a shoestring budget so we need to save money. We live in a subdivision and everyone has 7' wood fences around their property. I have never seen any raccoons, or anything like that. We only have squirrels in our neighborhood. Also, I would only have the run be accessible during the day. So would chicken wire be ok? Also will pressure treated lumber be ok, or is that bad for the chickens? I need something that won't rot. Here is the coop they will live in once they are big enough (they are chicks right now).