i have bought many cages for my pet rats since they managed to escape through all of them, but this one is a keeper. chew proof and plenty of room. plus easy cleaning. love how the doors swing wide open. the only thing that i didnt like about the cage is that the shelf and floor covers arent high enough so i have to sweep up the bedding off my floors everyday. trying to purchase the scatter guard, but its always out of stock. other than that perfect cage!