YEXEXINM Trimmable Cat Scratching Post Carpet Covered 78.7”x15.8” Self-Adhesive Cat Tree Shelves Replacement Parts Mat Cat Scratcher for Cat Tree Shelf Shelves Steps Couch Furniture DIY Protector

I have 20ft high open railings overlooking my living room. I ended up cutting boards the exact length and width of the railing and carpeting them. I then 3d printed feet the grab the railing and hold them in place. I have 12 cats and haven't had an issue in years knock on wood. Their nails grip right in and it works perfect. Amazon also sells rolled low pile carpet with adhesive on the back. I've used this on toys and the edges of my couches. It holds exceptionally well. https://a.co/d/0isAigHQ It's a choice for sure, some people are super protective of their esthetic, I'm more protective of my pets. My install upstairs you can't even see unless you're upstairs next to it and even then it looks like it should be there. Good luck.