I know, I know, I've heard it over and over here, but I'm being told by two long time chicken owners here in my area to use this certain kind of chicken wire on my run. I've checked it out, and it does seem very sturdy, not flimsy like so much I've seen at Home Depot, etc. The trick to it is to seal the seams up - put a strip of wood down the post over the seam so raccoons can't get beneath/between. So I'm going for it. Hopefully they're both right - one lives in the woods and has all manner of wildlife all around her, she's kept chickens there for over 40 years and hasn't lost one yet to predators. The other is a bit younger, but has the same experience, she lives here in my town. I'll accept all the "I told you so"s if anything happens. Edited to add: This is 1" poultry wire, and the gauge seems to be much thicker than most. I am not planning on letting them go in and out to the run as they please, either, they will be securely locked in at night and let out in the morning. I'm sure it'll be tested out really quickly, hubby saw a huge raccoon outside early on this morning, about an hour before dawn, and I've already seen the tail end of a grey fox going into the woods behind the coop.