Bought for my cat. Using one nesting box(right side) as his food spot plus holds extra food and water. Made a  custom litter box for the inside left side nesting box. Used styrofoam from packing boxes to raise them level. Used the nesting box dividers to put his water dish on . Put carpet on the metal tray and in food area. Put a rectangle piece of plywood across the outside perches and he has a shelf now. He loves staying out all day now with room to move around. Directions Awesome. Cartons well packed and numbered keep items together according to carton(box) # they came in, directions refer back to carton # !!     Makes it very easy.