I'm likely moving in a few months and will have a back garden if I do. It's fairly small - maybe 3x3 meters, and I'm thinking of fully enclosing the whole thing into a "catio" so my guys can go in and out at their leisure with a cat door without being loose on the street. Has anyone built one, and if so do you have recommendations particularly for materials? I see this "cat net" for sale on pet supply websites which just seems to be a strong chew-proof nylon netting. I was going to enclose my back balcony with it even if I didn't move before the summer because I'm afraid my slightly too adventurous younger guy might absent-mindedly jump for a bird or something. (My older boy is more placid.