Today, I finally did some pruning on my fruit trees, which I had let go for a while, and the upper branches started getting tangled in the wires. It turns out that climbing a tree with a saw in hand isn't as fun as it was in my childhood. Hopefully, I'll be able to finish it without needing to...
I sympathize with you very much. Rats can be a big problem in this. I read somewhere that they can even gnaw through concrete. Maybe you could put a thin sheet of steel on the floor? But top it with wood so your chickens don't get too cold (or hot) from the metal.