[souffle]

We have WW in a rex and they seem to cope fine with the ladders and have never had any problems with the shelf personally. To be honest ours dont go up of the shelf much. They prefer to go in the tunnel bit underneath. You cold replace the ladders with a log bridge if you were unsure. Bend it like a bridge then they just climb up and hop on to the shelf. They also like to sleep under the log bridge.