So I finally settled on using a wire shelf and putting a couple of towels under it so they could get contact with the pad. Covered it all with a towel to keep the heat in and left them in the room with the lights off. They chirped for about 10 minutes and then when the room got dark it was quiet. Just checked and all 9 are spread out on the towel sleeping away! I'm sure they will be up with the sun in the morning since I have them by the window. This is a great thing!