Hi! I'm building a cube enclosure tonight and I am trying to figure out what to use for a guard in my cage so the bedding and food can't be kicked or spilt out. I noticed in most of the cage pictures on here that everyone seems to have the same kind of guard thats about 6 inches high around the perimeter of their cages, What is that stuff? Is it plastic? Where can i buy it? I hope someone can help me and understand my question too, lol! Thanks!
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