I have not had anyone escape, but the humidity may be an issue from time to time. I mist and have a humidifier so it really is not a problem for me. I have pics of what the velcro and insulation board was used for....just have to get the posted The velcro is used to hold the heat panels that I made on, and the insulation board is to enclose the bottom of the rack to keep heat from 'leaking out' the bottom and keep an even temp throughout the rack.