Does any one know what im going on about....... There like little green fences that you attach together......some how, i think. I have seen photo's of some of your bunny housing and im sure (cant remember who) but someone has a run made out of them. Just a few questions, how safe are they?Are they as safe/sturdy as making a bunny run from wood and wire? could i leave her out in it while im at work? It would be on concrete, so nothing can burrow in or out. What about a roof, how does that work? please help :?