GarthRyan, on that chicken wire, how did it fail? And do you know the gauge of the wire you used?
A couple of years ago, someone posted some photos of what dogs did to her chicken wire when they got her chickens. Two different things happened. In some cases, the wire broke, pure and simple. But chicken wire is made by twisting the wire together at the loops. In some cases, her photos showed that the wire just untwisted and came apart so she had two different failure modes. Just curious which failure mode you saw.
A few years back I found some no-dig kennel wire at
Tractor Supply to use around my garden. It’s made the same way as chicken wire but a heaver gauge. I can’t remember what gauge it was, but it was heavy enough that dogs could not break it or untwist it. The holes were 1-1/2” so a raccoon could do some damage reaching through, but it was heavy enough to stop him from going through as long as it is attached right.
I’ve read a few posts on here where a dog or raccoon tore through light-gauge hardware cloth too. I didn’t see photos of it so I am not sure if the wire itself failed or if the attachment failed, but I do think gauge of any of it makes a difference. How well it works also depends on how big the dog or raccoon is and how bad it wants what is on the other side.
IFB, if where you are talking about is high enough up that a raccoon cannot reach through to get to your chickens, you don’t need to worry about a raccoon reaching through and pulling them through in parts. You can use heavier gauge wire with bigger holes and maybe save some money. Depending on how big those holes are, snakes and maybe other things can get through, but if they can get in other ways, does it matter? There are always trade-offs.