I put an opaque container at least 12" x 8" x 8" full of moist washed playsand in the cage so the chameleon has a place to dig to show you when she's ready to lay. Most will lay the eggs in this container. However, if she won't I have a 65 litre rubbermade container half full of sand with a branch in it for her to sit on ready. I cut a large hole in the lid and put screen over it. When the female is ready, I put her in the bin and put the lid on and place a light over the screen on the lid. Be careful that it doesn't get too hot inside the bin. The female can be watered and fed in this bin...but don't leave extra insects in the container.