After reading about the tragedy of a ferret losing his life to a wild leap from the top of a cage, I thought I'd post how we "cured" Mischief, my master climber. After the umpteenth time of finding Mischy on top of the cage (4.5 feet high), my DH went to Home Depot and got 4 pieces of plexiglass cut about 8"inches high and the width of each side of the cage. He drilled holes in each corner (and at the center edges on the long sides) and we used zip ties to attach these to the sides of the cage, about 2 feet off the ground. This made a smooth surface past which Mischief couldn't climb. She was immensely frustrated! And I was immensely relieved to come home from work and find her furry little butt safely on the floor instead of perched on the cage, contemplating where she could go next. If your budget is tight I'd imagine pieces of cardboard would do in a pinch. 8-10 inches high, placed about 1.5-2 feet ("ferret reach") above the floor, should do the trick! I hope this helps. Melissa Bell Max, Merlin, Buddy & Fae...missing Mischief [Posted in FML issue 5224]