The ones you leave on top of hides do you leave it on top of the side on the warm side so that it maintains its temp? I have had success with my balls dangling if I place it down they will sniff and ignore it but I would love to get to the point that I can just place the rat in the enclosure and move to the next I suspect the boas will be much easier on this method they are still in qt and their new cages will be built 1 month before they come out of qt. I hope to never have to do the zombie rat lol