Artificial ant nest made of plastic with a maze-like internal structure - Type: Artificial ant nest - Material: Plastic - Design: Maze-like internal structure - Size: Compact Thank you for viewing. This is an artificial ant nest (breeding case) created with a 3D printer. The first breeding case is new and unused. For those who purchase, I will give away the second breeding case (used, cleaned) as a bonus. Both are about the size of a cigarette box. My child kept ants for a science project, but it's been about three years, and the child no longer takes care of them... In the end, the seller has been taking care of the ants. I recently had the opportunity to release all the ants into the wild, so I'm getting rid of the breeding case I was using and the spare one I had.