Well when I had Grif in the Zoo Med 12x12x18 terrarium one of the female crickets must have thought the conditions were just right and apparently laid her eggs in the coco fiber substrate. After I moved Grif back into his 10 gallon I saw several tiny crickets within the tank so I placed a small plastic plate in there with some cricket food and cricket quencher and am now going to raise them to adulthood. They've been in there for two weeks or more. They seem to be doing fine. I mist the substrate alil every other day so there is some moisture in there. Its kind of neat how they just appeared. I would figure that the eggs would have to winter over before hatching. Who knew?