I have heard of that, but obviously, you have to be really careful about stairs and other obstacles. A better bet, I think, is to put the leo in a large box or in the bathroom with the door closed.
Aliza
Can leos be put in a, hamster ball for outcage exercise lol? Just random question
During the summers I put mine in a box and take them outside for natural sunlight. Just make sure you sit next to the box so no birds swoop in for some dinner.